/*
* 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) ({ \
(fb_scrollmode(s) == SCROLL_REDRAW || fb_scrollmode(s) == SCROLL_MOVE) ? \
(i)->var.yres : (i)->var.yres_virtual; })
#define GETVXRES(s,i) ({ \
(fb_scrollmode(s) == SCROLL_REDRAW || fb_scrollmode(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) & (0 x80 >> bit);
}
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) |= 0 x80 >> bit;
}
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);
}
}
}
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);
}
}
}
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);
}
}
}
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
Messung V0.5 in Prozent C=99 H=77 G=88
¤ Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.0.9Bemerkung:
(vorverarbeitet am 2026-10-11)
¤
*Bot Zugriff