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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	gx_display_driver_4bpp_block_move.c	Lines:	136	136	100.0 %
Date:	2024-12-05 08:52:37	Branches:	70	70	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                                                        */
/**                                                                       */
/**   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                                                  */
/*                                                                        */
/*  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    */
/*                                                                        */
/**************************************************************************/
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			*
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			/** Display Management (Display) */
18			/** */
19			/**************************************************************************/
20
21			#define GX_SOURCE_CODE
22
23
24			/* Include necessary system files. */
25
26			#include "gx_api.h"
27			#include "gx_display.h"
28			#include "gx_system.h"
29			#include "gx_utility.h"
30
31			/**************************************************************************/
32			/* */
33			/* FUNCTION RELEASE */
34			/* */
35			/* _gx_display_driver_4bpp_block_move PORTABLE C */
36			/* 6.1 */
37			/* AUTHOR */
38			/* */
39			/* Kenneth Maxwell, Microsoft Corporation */
40			/* */
41			/* DESCRIPTION */
42			/* */
43			/* 4-bpp display driver block moving function. */
44			/* */
45			/* INPUT */
46			/* */
47			/* context Draw context */
48			/* block The rectangle to be moved */
49			/* xshift Amount to move on X-axis */
50			/* yshift Amount to move on Y-axis */
51			/* */
52			/* OUTPUT */
53			/* */
54			/* None */
55			/* */
56			/* CALLS */
57			/* */
58			/* memmove Move a block of data */
59			/* */
60			/* CALLED BY */
61			/* */
62			/* GUIX Internal Code */
63			/* */
64			/* RELEASE HISTORY */
65			/* */
66			/* DATE NAME DESCRIPTION */
67			/* */
68			/* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
69			/* 09-30-2020 Kenneth Maxwell Modified comment(s), */
70			/* resulting in version 6.1 */
71			/* */
72			/**************************************************************************/
73		16	VOID _gx_display_driver_4bpp_block_move(GX_DRAW_CONTEXT *context,
74			GX_RECTANGLE *block, INT xshift, INT yshift)
75			{
76			GX_UBYTE *putrow;
77			GX_UBYTE *getrow;
78			GX_UBYTE *pGet;
79			GX_UBYTE *pPut;
80			INT width;
81			INT column;
82			INT y;
83			INT height;
84			INT stride;
85			GX_UBYTE putmask;
86			GX_UBYTE getmask;
87			INT move_width;
88
89		16	putrow = (GX_UBYTE *)context -> gx_draw_context_memory;
90
91		16	stride = (context -> gx_draw_context_pitch + 1) >> 1;
92
93	✓✓	16	if (xshift)
94			{
95	✓✓	9	if (xshift > 0)
96			{
97			/* Copy from right to left. */
98		5	width = block -> gx_rectangle_right - block -> gx_rectangle_left + 1;
99		5	width -= xshift;
100
101		5	putrow += block -> gx_rectangle_top * stride;
102		5	getrow = putrow;
103
104		5	putrow += block -> gx_rectangle_right >> 1;
105		5	getrow += (block -> gx_rectangle_left + width - 1) >> 1;
106
107	✓✓	546	for (y = block -> gx_rectangle_top; y <= block -> gx_rectangle_bottom; y++)
108			{
109		541	pPut = putrow;
110		541	pGet = getrow;
111
112	✓✓	541	if (block -> gx_rectangle_right & 0x01)
113			{
114		456	putmask = 0x0f;
115			}
116			else
117			{
118		85	putmask = 0xf0;
119			}
120
121	✓✓	541	if ((block -> gx_rectangle_left + width - 1) & 0x01)
122			{
123		114	getmask = 0x0f;
124			}
125			else
126			{
127		427	getmask = 0xf0;
128			}
129
130	✓✓	77645	for (column = 0; column < width; column++)
131			{
132			/* Set bits to 0. */
133		77104	*pPut &= (GX_UBYTE)(~putmask);
134
135	✓✓	77104	if ((*pGet) & getmask)
136			{
137	✓✓	75695	if (getmask == putmask)
138			{
139		11609	pPut \|= ((pGet) & getmask);
140			}
141			else
142			{
143	✓✓	64086	if (getmask == 0xf0)
144			{
145		32208	pPut \|= (GX_UBYTE)((((pGet) & getmask) >> 4) & 0x0f);
146			}
147			else
148			{
149		31878	pPut \|= (GX_UBYTE)((GX_UBYTE)(((pGet) & getmask) << 4) & 0xf0);
150			}
151			}
152			}
153
154	✓✓	77104	if (getmask == 0xf0)
155			{
156		38723	getmask = 0x0f;
157		38723	pGet--;
158			}
159			else
160			{
161		38381	getmask = 0xf0;
162			}
163
164	✓✓	77104	if (putmask == 0xf0)
165			{
166		38381	putmask = 0x0f;
167		38381	pPut--;
168			}
169			else
170			{
171		38723	putmask = 0xf0;
172			}
173			}
174
175		541	putrow += stride;
176		541	getrow += stride;
177			}
178			}
179			else
180			{
181			/* Copy from right to left. */
182		4	width = block -> gx_rectangle_right - block -> gx_rectangle_left + 1;
183		4	width += xshift;
184
185		4	putrow += block -> gx_rectangle_top * stride;
186		4	getrow = putrow;
187
188		4	putrow += block -> gx_rectangle_left >> 1;
189		4	getrow += (block -> gx_rectangle_left - xshift) >> 1;
190
191	✓✓	431	for (y = block -> gx_rectangle_top; y <= block -> gx_rectangle_bottom; y++)
192			{
193		427	pPut = putrow;
194		427	pGet = getrow;
195
196	✓✓	427	if (block -> gx_rectangle_left & 0x01)
197			{
198		85	putmask = 0x0f;
199			}
200			else
201			{
202		342	putmask = 0xf0;
203			}
204
205	✓✓	427	if ((block -> gx_rectangle_left - xshift) & 0x01)
206			{
207		313	getmask = 0x0f;
208			}
209			else
210			{
211		114	getmask = 0xf0;
212			}
213
214	✓✓	47321	for (column = 0; column < width; column++)
215			{
216			/* Set bits to 0. */
217		46894	*pPut &= (GX_UBYTE)(~putmask);
218
219	✓✓	46894	if ((*pGet) & getmask)
220			{
221	✓✓	45329	if (getmask == putmask)
222			{
223		11609	pPut \|= ((pGet) & getmask);
224			}
225			else
226			{
227	✓✓	33720	if (getmask == 0xf0)
228			{
229		16749	pPut \|= (GX_UBYTE)((((pGet) & getmask) >> 4) & 0x0f);
230			}
231			else
232			{
233		16971	pPut \|= (GX_UBYTE)((GX_UBYTE)(((pGet) & getmask) << 4) & 0xf0);
234			}
235			}
236			}
237
238		46894	getmask >>= 4;
239	✓✓	46894	if (getmask == 0)
240			{
241		23561	getmask = 0xf0;
242		23561	pGet++;
243			}
244
245		46894	putmask >>= 4;
246	✓✓	46894	if (putmask == 0)
247			{
248		23333	putmask = 0xf0;
249		23333	pPut++;
250			}
251			}
252
253		427	putrow += stride;
254		427	getrow += stride;
255			}
256			}
257			}
258			else
259			{
260		7	width = block -> gx_rectangle_right - block -> gx_rectangle_left + 1;
261
262	✓✓	7	if (yshift > 0)
263			{
264			/* Copy from top to bottom. */
265		4	putrow += (block -> gx_rectangle_bottom * stride);
266		4	putrow += (block -> gx_rectangle_left >> 1);
267
268		4	getrow = putrow;
269		4	getrow -= yshift * stride;
270
271		4	height = block -> gx_rectangle_bottom - block -> gx_rectangle_top + 1;
272		4	height -= yshift;
273
274	✓✓	411	for (y = 0; y < height; y++)
275			{
276		407	pPut = putrow;
277		407	pGet = getrow;
278
279	✓✓	407	if (block -> gx_rectangle_left & 0x01)
280			{
281		68	putmask = 0x0f;
282			}
283			else
284			{
285		339	putmask = 0xf0;
286			}
287
288		407	column = 0;
289	✓✓	950	while (column < width)
290			{
291	✓✓✓✓	543	if ((putmask == 0xf0) && (width - column >= 2))
292			{
293		407	move_width = (width - column) >> 1;
294		407	memmove(pPut, pGet, (size_t)move_width);
295		407	pPut += move_width;
296		407	pGet += move_width;
297		407	column += (move_width << 1);
298			}
299			else
300			{
301		136	*pPut &= (GX_UBYTE)(~putmask);
302	✓✓	136	if ((*pGet) & putmask)
303			{
304		12	pPut \|= (GX_UBYTE)((pGet) & putmask);
305			}
306
307
308		136	putmask >>= 4;
309
310	✓✓	136	if (putmask == 0)
311			{
312		68	putmask = 0xf0;
313		68	pPut++;
314		68	pGet++;
315			}
316
317		136	column++;
318			}
319			}
320
321		407	putrow -= stride;
322		407	getrow -= stride;
323			}
324			}
325			else
326			{
327			/* Copy from bottom to top. */
328		3	putrow += (block -> gx_rectangle_top * stride);
329		3	putrow += (block -> gx_rectangle_left >> 1);
330
331		3	getrow = putrow;
332		3	getrow -= yshift * stride;
333
334		3	height = block -> gx_rectangle_bottom - block -> gx_rectangle_top + 1;
335		3	height += yshift;
336
337	✓✓	221	for (y = 0; y < height; y++)
338			{
339		218	pPut = putrow;
340		218	pGet = getrow;
341
342	✓✓	218	if (block -> gx_rectangle_left & 0x01)
343			{
344		68	putmask = 0x0f;
345			}
346			else
347			{
348		150	putmask = 0xf0;
349			}
350
351		218	column = 0;
352
353	✓✓	572	while (column < width)
354			{
355	✓✓✓✓	354	if ((putmask == 0xf0) && (width - column >= 2))
356			{
357		218	move_width = (width - column) >> 1;
358		218	memmove(pPut, pGet, (size_t)move_width);
359		218	pPut += move_width;
360		218	pGet += move_width;
361		218	column += (move_width << 1);
362			}
363			else
364			{
365		136	*pPut &= (GX_UBYTE)(~putmask);
366	✓✓	136	if ((*pGet) & putmask)
367			{
368		12	pPut \|= (GX_UBYTE)((pGet) & putmask);
369			}
370
371		136	putmask >>= 4;
372
373	✓✓	136	if (putmask == 0)
374			{
375		68	putmask = 0xf0;
376		68	pPut++;
377		68	pGet++;
378			}
379
380		136	column++;
381			}
382			}
383
384		218	putrow += stride;
385		218	getrow += stride;
386			}
387			}
388			}
389		16	}
390