/usr/include/bogl/bogl-cfb.h is in libbogl-dev 0.1.18-12ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 | /* BOGL - Ben's Own Graphics Library.
Written by Ben Pfaff <pfaffben@debian.org>.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA. */
/* bogl-cfb.h: Common inline functions and data structures used by the
packed-pixel drivers. This should be considered an internal,
private header file.
Written by David Huggins-Daines <dhd@debian.org> */
#include <sys/types.h>
#include <string.h>
#include <endian.h>
struct bits4 {
unsigned int p0:4;
unsigned int p1:4;
} __attribute__ ((packed));
struct bits24 {
unsigned char bytes[3];
} __attribute__ ((packed));
static inline void
put_var (volatile void* dst, size_t off, unsigned int c, size_t b)
{
switch (b)
{
case 32:
/* FIXME: has endianness problems */
((u_int32_t*)(dst))[off] = c;
break;
case 24:
/* FIXME: also has endianness problems */
((struct bits24*)(dst))[off].bytes[2] = (c >> 16);
((struct bits24*)(dst))[off].bytes[1] = (c >> 8);
((struct bits24*)(dst))[off].bytes[0] = c;
break;
case 16:
/* FIXME: also has endianness problems */
((unsigned short*)(dst))[off] = c;
break;
case 8:
((unsigned char*)(dst))[off] = c;
break;
case 4:
if (off % 2)
((struct bits4*)(dst))[off/2].p1 = c;
else
((struct bits4*)(dst))[off/2].p0 = c;
break;
}
}
static inline void*
memset_24(void* d, unsigned int c, size_t len, size_t b)
{
unsigned char* dst = d;
if (len > 8)
{
/* We have to use a block of 3 regardless of the sizeof(int) */
unsigned int block[3];
const unsigned int bsiz = sizeof(unsigned int);
ssize_t xlen;
/* Yes we have to do it this way due to little-endian brain
damage */
put_var (block, 0, c, 24);
put_var (block, 1, c, 24);
put_var (block, 2, c, 24);
put_var (block, 3, c, 24);
if (sizeof(unsigned int) == 8)
{
put_var (block, 4, c, 24);
put_var (block, 5, c, 24);
put_var (block, 6, c, 24);
put_var (block, 7, c, 24);
}
/* Align to an int boundary */
while ((unsigned long)dst % sizeof(unsigned int))
{
put_var(dst, 0, c, 24);
dst += 3;
len--;
}
xlen = len / bsiz;
while (xlen)
{
((unsigned int*)(dst))[0] = block[0];
((unsigned int*)(dst))[1] = block[1];
((unsigned int*)(dst))[2] = block[2];
dst += sizeof(block);
xlen--;
}
len %= bsiz;
}
/* Plot individual pixels */
while (len--)
{
put_var(dst, 0, c, 24);
dst += 3;
}
return dst;
}
static inline void*
memset_sub8(void* d, unsigned int c, ssize_t offset, size_t len, size_t b)
{
unsigned char* dst = d;
unsigned char fill;
int i;
/* Align to one byte */
while (offset % (8 / b))
{
put_var (dst, offset, c, b);
offset++;
len--;
}
dst += offset * b / 8;
/* Copy */
for (i = 0; i*b < 8; i++)
put_var (&fill, i, c, b);
memset (dst, fill, len * b / 8);
dst += len * b / 8;
/* Align again */
len %= 8 / b;
for (i = 0; i < len; i++)
{
put_var (dst, i, c, b);
}
dst++;
return dst;
}
void* memset_var(void* d, unsigned int c, ssize_t offset,
size_t len, size_t b);
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