Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	gx_display_driver_4bpp_block_move.c	Lines:	136	136	100.0 %
Date:	2026-03-06 19:21:09	Branches:	70	70	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                                                        */
/**                                                                       */
/**   Display Management (Display)                                        */
/**                                                                       */
/**************************************************************************/

#define GX_SOURCE_CODE


/* Include necessary system files.  */

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

/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _gx_display_driver_4bpp_block_move                  PORTABLE C      */
/*                                                           6.1          */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Kenneth Maxwell, Microsoft Corporation                              */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    4-bpp display driver block moving function.                         */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    context                               Draw context                  */
/*    block                                 The rectangle to be moved     */
/*    xshift                                Amount to move on X-axis      */
/*    yshift                                Amount to move on Y-axis      */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    None                                                                */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    memmove                               Move a block of data          */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    GUIX Internal Code                                                  */
/*                                                                        */
/**************************************************************************/
VOID _gx_display_driver_4bpp_block_move(GX_DRAW_CONTEXT *context,
                                        GX_RECTANGLE *block, INT xshift, INT yshift)
{
GX_UBYTE *putrow;
GX_UBYTE *getrow;
GX_UBYTE *pGet;
GX_UBYTE *pPut;
INT       width;
INT       column;
INT       y;
INT       height;
INT       stride;
GX_UBYTE  putmask;
GX_UBYTE  getmask;
INT       move_width;

    putrow = (GX_UBYTE *)context -> gx_draw_context_memory;

    stride = (context -> gx_draw_context_pitch + 1) >> 1;

    if (xshift)
    {
        if (xshift > 0)
        {
            /* Copy from right to left.  */
            width = block -> gx_rectangle_right - block -> gx_rectangle_left + 1;
            width -= xshift;

            putrow += block -> gx_rectangle_top * stride;
            getrow = putrow;

            putrow += block -> gx_rectangle_right >> 1;
            getrow += (block -> gx_rectangle_left + width - 1) >> 1;

            for (y = block -> gx_rectangle_top; y <= block -> gx_rectangle_bottom; y++)
            {
                pPut = putrow;
                pGet = getrow;

                if (block -> gx_rectangle_right & 0x01)
                {
                    putmask = 0x0f;
                }
                else
                {
                    putmask = 0xf0;
                }

                if ((block -> gx_rectangle_left + width - 1) & 0x01)
                {
                    getmask = 0x0f;
                }
                else
                {
                    getmask = 0xf0;
                }

                for (column = 0; column < width; column++)
                {
                    /* Set bits to 0. */
                    *pPut &= (GX_UBYTE)(~putmask);

                    if ((*pGet) & getmask)
                    {
                        if (getmask == putmask)
                        {
                            *pPut |= ((*pGet) & getmask);
                        }
                        else
                        {
                            if (getmask == 0xf0)
                            {
                                *pPut |= (GX_UBYTE)((((*pGet) & getmask) >> 4) & 0x0f);
                            }
                            else
                            {
                                *pPut |= (GX_UBYTE)((GX_UBYTE)(((*pGet) & getmask) << 4) & 0xf0);
                            }
                        }
                    }

                    if (getmask == 0xf0)
                    {
                        getmask = 0x0f;
                        pGet--;
                    }
                    else
                    {
                        getmask = 0xf0;
                    }

                    if (putmask == 0xf0)
                    {
                        putmask = 0x0f;
                        pPut--;
                    }
                    else
                    {
                        putmask = 0xf0;
                    }
                }

                putrow += stride;
                getrow += stride;
            }
        }
        else
        {
            /* Copy from right to left.  */
            width = block -> gx_rectangle_right - block -> gx_rectangle_left + 1;
            width += xshift;

            putrow += block -> gx_rectangle_top * stride;
            getrow = putrow;

            putrow += block -> gx_rectangle_left >> 1;
            getrow += (block -> gx_rectangle_left - xshift) >> 1;

            for (y = block -> gx_rectangle_top; y <= block -> gx_rectangle_bottom; y++)
            {
                pPut = putrow;
                pGet = getrow;

                if (block -> gx_rectangle_left & 0x01)
                {
                    putmask = 0x0f;
                }
                else
                {
                    putmask = 0xf0;
                }

                if ((block -> gx_rectangle_left - xshift) & 0x01)
                {
                    getmask = 0x0f;
                }
                else
                {
                    getmask = 0xf0;
                }

                for (column = 0; column < width; column++)
                {
                    /* Set bits to 0. */
                    *pPut &= (GX_UBYTE)(~putmask);

                    if ((*pGet) & getmask)
                    {
                        if (getmask == putmask)
                        {
                            *pPut |= ((*pGet) & getmask);
                        }
                        else
                        {
                            if (getmask == 0xf0)
                            {
                                *pPut |= (GX_UBYTE)((((*pGet) & getmask) >> 4) & 0x0f);
                            }
                            else
                            {
                                *pPut |= (GX_UBYTE)((GX_UBYTE)(((*pGet) & getmask) << 4) & 0xf0);
                            }
                        }
                    }

                    getmask >>= 4;
                    if (getmask == 0)
                    {
                        getmask = 0xf0;
                        pGet++;
                    }

                    putmask >>= 4;
                    if (putmask == 0)
                    {
                        putmask = 0xf0;
                        pPut++;
                    }
                }

                putrow += stride;
                getrow += stride;
            }
        }
    }
    else
    {
        width = block -> gx_rectangle_right - block -> gx_rectangle_left + 1;

        if (yshift > 0)
        {
            /* Copy from top to bottom.  */
            putrow += (block -> gx_rectangle_bottom * stride);
            putrow += (block -> gx_rectangle_left >> 1);

            getrow = putrow;
            getrow -= yshift * stride;

            height = block -> gx_rectangle_bottom - block -> gx_rectangle_top + 1;
            height -= yshift;

            for (y = 0; y < height; y++)
            {
                pPut = putrow;
                pGet = getrow;

                if (block -> gx_rectangle_left & 0x01)
                {
                    putmask = 0x0f;
                }
                else
                {
                    putmask = 0xf0;
                }

                column = 0;
                while (column < width)
                {
                    if ((putmask == 0xf0) && (width - column >= 2))
                    {
                        move_width = (width - column) >> 1;
                        memmove(pPut, pGet, (size_t)move_width);
                        pPut += move_width;
                        pGet += move_width;
                        column += (move_width << 1);
                    }
                    else
                    {
                        *pPut &= (GX_UBYTE)(~putmask);
                        if ((*pGet) & putmask)
                        {
                            *pPut |= (GX_UBYTE)((*pGet) & putmask);
                        }


                        putmask >>= 4;

                        if (putmask == 0)
                        {
                            putmask = 0xf0;
                            pPut++;
                            pGet++;
                        }

                        column++;
                    }
                }

                putrow -= stride;
                getrow -= stride;
            }
        }
        else
        {
            /* Copy from bottom to top.  */
            putrow += (block -> gx_rectangle_top * stride);
            putrow += (block -> gx_rectangle_left >> 1);

            getrow = putrow;
            getrow -= yshift * stride;

            height = block -> gx_rectangle_bottom - block -> gx_rectangle_top + 1;
            height += yshift;

            for (y = 0; y < height; y++)
            {
                pPut = putrow;
                pGet = getrow;

                if (block -> gx_rectangle_left & 0x01)
                {
                    putmask = 0x0f;
                }
                else
                {
                    putmask = 0xf0;
                }

                column = 0;

                while (column < width)
                {
                    if ((putmask == 0xf0) && (width - column >= 2))
                    {
                        move_width = (width - column) >> 1;
                        memmove(pPut, pGet, (size_t)move_width);
                        pPut += move_width;
                        pGet += move_width;
                        column += (move_width << 1);
                    }
                    else
                    {
                        *pPut &= (GX_UBYTE)(~putmask);
                        if ((*pGet) & putmask)
                        {
                            *pPut |= (GX_UBYTE)((*pGet) & putmask);
                        }

                        putmask >>= 4;

                        if (putmask == 0)
                        {
                            putmask = 0xf0;
                            pPut++;
                            pGet++;
                        }

                        column++;
                    }
                }

                putrow += stride;
                getrow += stride;
            }
        }
    }
}



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			/** Display Management (Display) */
19			/** */
20			/**************************************************************************/
21
22			#define GX_SOURCE_CODE
23
24
25			/* Include necessary system files. */
26
27			#include "gx_api.h"
28			#include "gx_display.h"
29			#include "gx_system.h"
30			#include "gx_utility.h"
31
32			/**************************************************************************/
33			/* */
34			/* FUNCTION RELEASE */
35			/* */
36			/* _gx_display_driver_4bpp_block_move PORTABLE C */
37			/* 6.1 */
38			/* AUTHOR */
39			/* */
40			/* Kenneth Maxwell, Microsoft Corporation */
41			/* */
42			/* DESCRIPTION */
43			/* */
44			/* 4-bpp display driver block moving function. */
45			/* */
46			/* INPUT */
47			/* */
48			/* context Draw context */
49			/* block The rectangle to be moved */
50			/* xshift Amount to move on X-axis */
51			/* yshift Amount to move on Y-axis */
52			/* */
53			/* OUTPUT */
54			/* */
55			/* None */
56			/* */
57			/* CALLS */
58			/* */
59			/* memmove Move a block of data */
60			/* */
61			/* CALLED BY */
62			/* */
63			/* GUIX Internal Code */
64			/* */
65			/**************************************************************************/
66		16	VOID _gx_display_driver_4bpp_block_move(GX_DRAW_CONTEXT *context,
67			GX_RECTANGLE *block, INT xshift, INT yshift)
68			{
69			GX_UBYTE *putrow;
70			GX_UBYTE *getrow;
71			GX_UBYTE *pGet;
72			GX_UBYTE *pPut;
73			INT width;
74			INT column;
75			INT y;
76			INT height;
77			INT stride;
78			GX_UBYTE putmask;
79			GX_UBYTE getmask;
80			INT move_width;
81
82		16	putrow = (GX_UBYTE *)context -> gx_draw_context_memory;
83
84		16	stride = (context -> gx_draw_context_pitch + 1) >> 1;
85
86	✓✓	16	if (xshift)
87			{
88	✓✓	9	if (xshift > 0)
89			{
90			/* Copy from right to left. */
91		5	width = block -> gx_rectangle_right - block -> gx_rectangle_left + 1;
92		5	width -= xshift;
93
94		5	putrow += block -> gx_rectangle_top * stride;
95		5	getrow = putrow;
96
97		5	putrow += block -> gx_rectangle_right >> 1;
98		5	getrow += (block -> gx_rectangle_left + width - 1) >> 1;
99
100	✓✓	546	for (y = block -> gx_rectangle_top; y <= block -> gx_rectangle_bottom; y++)
101			{
102		541	pPut = putrow;
103		541	pGet = getrow;
104
105	✓✓	541	if (block -> gx_rectangle_right & 0x01)
106			{
107		456	putmask = 0x0f;
108			}
109			else
110			{
111		85	putmask = 0xf0;
112			}
113
114	✓✓	541	if ((block -> gx_rectangle_left + width - 1) & 0x01)
115			{
116		114	getmask = 0x0f;
117			}
118			else
119			{
120		427	getmask = 0xf0;
121			}
122
123	✓✓	77645	for (column = 0; column < width; column++)
124			{
125			/* Set bits to 0. */
126		77104	*pPut &= (GX_UBYTE)(~putmask);
127
128	✓✓	77104	if ((*pGet) & getmask)
129			{
130	✓✓	75695	if (getmask == putmask)
131			{
132		11609	pPut \|= ((pGet) & getmask);
133			}
134			else
135			{
136	✓✓	64086	if (getmask == 0xf0)
137			{
138		32208	pPut \|= (GX_UBYTE)((((pGet) & getmask) >> 4) & 0x0f);
139			}
140			else
141			{
142		31878	pPut \|= (GX_UBYTE)((GX_UBYTE)(((pGet) & getmask) << 4) & 0xf0);
143			}
144			}
145			}
146
147	✓✓	77104	if (getmask == 0xf0)
148			{
149		38723	getmask = 0x0f;
150		38723	pGet--;
151			}
152			else
153			{
154		38381	getmask = 0xf0;
155			}
156
157	✓✓	77104	if (putmask == 0xf0)
158			{
159		38381	putmask = 0x0f;
160		38381	pPut--;
161			}
162			else
163			{
164		38723	putmask = 0xf0;
165			}
166			}
167
168		541	putrow += stride;
169		541	getrow += stride;
170			}
171			}
172			else
173			{
174			/* Copy from right to left. */
175		4	width = block -> gx_rectangle_right - block -> gx_rectangle_left + 1;
176		4	width += xshift;
177
178		4	putrow += block -> gx_rectangle_top * stride;
179		4	getrow = putrow;
180
181		4	putrow += block -> gx_rectangle_left >> 1;
182		4	getrow += (block -> gx_rectangle_left - xshift) >> 1;
183
184	✓✓	431	for (y = block -> gx_rectangle_top; y <= block -> gx_rectangle_bottom; y++)
185			{
186		427	pPut = putrow;
187		427	pGet = getrow;
188
189	✓✓	427	if (block -> gx_rectangle_left & 0x01)
190			{
191		85	putmask = 0x0f;
192			}
193			else
194			{
195		342	putmask = 0xf0;
196			}
197
198	✓✓	427	if ((block -> gx_rectangle_left - xshift) & 0x01)
199			{
200		313	getmask = 0x0f;
201			}
202			else
203			{
204		114	getmask = 0xf0;
205			}
206
207	✓✓	47321	for (column = 0; column < width; column++)
208			{
209			/* Set bits to 0. */
210		46894	*pPut &= (GX_UBYTE)(~putmask);
211
212	✓✓	46894	if ((*pGet) & getmask)
213			{
214	✓✓	45329	if (getmask == putmask)
215			{
216		11609	pPut \|= ((pGet) & getmask);
217			}
218			else
219			{
220	✓✓	33720	if (getmask == 0xf0)
221			{
222		16749	pPut \|= (GX_UBYTE)((((pGet) & getmask) >> 4) & 0x0f);
223			}
224			else
225			{
226		16971	pPut \|= (GX_UBYTE)((GX_UBYTE)(((pGet) & getmask) << 4) & 0xf0);
227			}
228			}
229			}
230
231		46894	getmask >>= 4;
232	✓✓	46894	if (getmask == 0)
233			{
234		23561	getmask = 0xf0;
235		23561	pGet++;
236			}
237
238		46894	putmask >>= 4;
239	✓✓	46894	if (putmask == 0)
240			{
241		23333	putmask = 0xf0;
242		23333	pPut++;
243			}
244			}
245
246		427	putrow += stride;
247		427	getrow += stride;
248			}
249			}
250			}
251			else
252			{
253		7	width = block -> gx_rectangle_right - block -> gx_rectangle_left + 1;
254
255	✓✓	7	if (yshift > 0)
256			{
257			/* Copy from top to bottom. */
258		4	putrow += (block -> gx_rectangle_bottom * stride);
259		4	putrow += (block -> gx_rectangle_left >> 1);
260
261		4	getrow = putrow;
262		4	getrow -= yshift * stride;
263
264		4	height = block -> gx_rectangle_bottom - block -> gx_rectangle_top + 1;
265		4	height -= yshift;
266
267	✓✓	411	for (y = 0; y < height; y++)
268			{
269		407	pPut = putrow;
270		407	pGet = getrow;
271
272	✓✓	407	if (block -> gx_rectangle_left & 0x01)
273			{
274		68	putmask = 0x0f;
275			}
276			else
277			{
278		339	putmask = 0xf0;
279			}
280
281		407	column = 0;
282	✓✓	950	while (column < width)
283			{
284	✓✓✓✓	543	if ((putmask == 0xf0) && (width - column >= 2))
285			{
286		407	move_width = (width - column) >> 1;
287		407	memmove(pPut, pGet, (size_t)move_width);
288		407	pPut += move_width;
289		407	pGet += move_width;
290		407	column += (move_width << 1);
291			}
292			else
293			{
294		136	*pPut &= (GX_UBYTE)(~putmask);
295	✓✓	136	if ((*pGet) & putmask)
296			{
297		12	pPut \|= (GX_UBYTE)((pGet) & putmask);
298			}
299
300
301		136	putmask >>= 4;
302
303	✓✓	136	if (putmask == 0)
304			{
305		68	putmask = 0xf0;
306		68	pPut++;
307		68	pGet++;
308			}
309
310		136	column++;
311			}
312			}
313
314		407	putrow -= stride;
315		407	getrow -= stride;
316			}
317			}
318			else
319			{
320			/* Copy from bottom to top. */
321		3	putrow += (block -> gx_rectangle_top * stride);
322		3	putrow += (block -> gx_rectangle_left >> 1);
323
324		3	getrow = putrow;
325		3	getrow -= yshift * stride;
326
327		3	height = block -> gx_rectangle_bottom - block -> gx_rectangle_top + 1;
328		3	height += yshift;
329
330	✓✓	221	for (y = 0; y < height; y++)
331			{
332		218	pPut = putrow;
333		218	pGet = getrow;
334
335	✓✓	218	if (block -> gx_rectangle_left & 0x01)
336			{
337		68	putmask = 0x0f;
338			}
339			else
340			{
341		150	putmask = 0xf0;
342			}
343
344		218	column = 0;
345
346	✓✓	572	while (column < width)
347			{
348	✓✓✓✓	354	if ((putmask == 0xf0) && (width - column >= 2))
349			{
350		218	move_width = (width - column) >> 1;
351		218	memmove(pPut, pGet, (size_t)move_width);
352		218	pPut += move_width;
353		218	pGet += move_width;
354		218	column += (move_width << 1);
355			}
356			else
357			{
358		136	*pPut &= (GX_UBYTE)(~putmask);
359	✓✓	136	if ((*pGet) & putmask)
360			{
361		12	pPut \|= (GX_UBYTE)((pGet) & putmask);
362			}
363
364		136	putmask >>= 4;
365
366	✓✓	136	if (putmask == 0)
367			{
368		68	putmask = 0xf0;
369		68	pPut++;
370		68	pGet++;
371			}
372
373		136	column++;
374			}
375			}
376
377		218	putrow += stride;
378		218	getrow += stride;
379			}
380			}
381			}
382		16	}
383