Release 4.11 drivers/video/console/fbcon_rotate.h

/*
 *  linux/drivers/video/console/fbcon_rotate.h -- Software Display Rotation
 *
 *      Copyright (C) 2005 Antonino Daplas <adaplas@pol.net>
 *
 *  This file is subject to the terms and conditions of the GNU General Public
 *  License.  See the file COPYING in the main directory of this archive
 *  for more details.
 */

#ifndef _FBCON_ROTATE_H

#define _FBCON_ROTATE_H


#define GETVYRES(s,i) ({                           \
        (s == SCROLL_REDRAW || s == SCROLL_MOVE) ? \
        (i)->var.yres : (i)->var.yres_virtual; })


#define GETVXRES(s,i) ({                           \
        (s == SCROLL_REDRAW || s == SCROLL_MOVE || !(i)->fix.xpanstep) ? \
        (i)->var.xres : (i)->var.xres_virtual; })




static inline int pattern_test_bit(u32 x, u32 y, u32 pitch, const char *pat)
{
	u32 tmp = (y * pitch) + x, index = tmp / 8,  bit = tmp % 8;

	pat +=index;
	return (*pat) & (0x80 >> bit);
}

Contributors
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CommitProp
Antonino A. Daplas
54
90.00%
1
50.00%
Benjamin Herrenschmidt
6
10.00%
1
50.00%
Total
60
100.00%
2
100.00%



static inline void pattern_set_bit(u32 x, u32 y, u32 pitch, char *pat)
{
	u32 tmp = (y * pitch) + x, index = tmp / 8, bit = tmp % 8;

	pat += index;

	(*pat) |= 0x80 >> bit;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Antonino A. Daplas
51
91.07%
1
50.00%
Benjamin Herrenschmidt
5
8.93%
1
50.00%
Total
56
100.00%
2
100.00%



static inline void rotate_ud(const char *in, char *out, u32 width, u32 height)
{
	int i, j;
	int shift = (8 - (width % 8)) & 7;

	width = (width + 7) & ~7;

	for (i = 0; i < height; i++) {
		for (j = 0; j < width - shift; j++) {
			if (pattern_test_bit(j, i, width, in))
				pattern_set_bit(width - (1 + j + shift),
						height - (1 + i),
						width, out);
		}

	}
}

Contributors
Person
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CommitProp
Antonino A. Daplas
121
98.37%
2
66.67%
Stefani Seibold
2
1.63%
1
33.33%
Total
123
100.00%
3
100.00%



static inline void rotate_cw(const char *in, char *out, u32 width, u32 height)
{
	int i, j, h = height, w = width;
	int shift = (8 - (height % 8)) & 7;

	width = (width + 7) & ~7;
	height = (height + 7) & ~7;

	for (i = 0; i < h; i++) {
		for (j = 0; j < w; j++) {
			if (pattern_test_bit(j, i, width, in))
				pattern_set_bit(height - 1 - i - shift, j,
						height, out);

		}
	}
}

Contributors
Person
Tokens
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CommitProp
Antonino A. Daplas
132
100.00%
1
100.00%
Total
132
100.00%
1
100.00%



static inline void rotate_ccw(const char *in, char *out, u32 width, u32 height)
{
	int i, j, h = height, w = width;
	int shift = (8 - (width % 8)) & 7;

	width = (width + 7) & ~7;
	height = (height + 7) & ~7;

	for (i = 0; i < h; i++) {
		for (j = 0; j < w; j++) {
			if (pattern_test_bit(j, i, width, in))
				pattern_set_bit(i, width - 1 - j - shift,
						height, out);
		}
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Antonino A. Daplas
132
100.00%
2
100.00%
Total
132
100.00%
2
100.00%

extern void fbcon_rotate_cw(struct fbcon_ops *ops);
extern void fbcon_rotate_ud(struct fbcon_ops *ops);
extern void fbcon_rotate_ccw(struct fbcon_ops *ops);
#endif
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Antonino A. Daplas
547
97.68%
5
71.43%
Benjamin Herrenschmidt
11
1.96%
1
14.29%
Stefani Seibold
2
0.36%
1
14.29%
Total
560
100.00%
7
100.00%
Directory: drivers/video/console

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