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grub/util/grub-mkfont.c

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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009,2010 Free Software Foundation, Inc.
*
* GRUB 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 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <grub/types.h>
#include <grub/misc.h>
#include <grub/emu/misc.h>
#include <grub/util/misc.h>
#include <grub/i18n.h>
#include <grub/fontformat.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <ft2build.h>
#include FT_FREETYPE_H
#include <freetype/ftsynth.h>
#include "progname.h"
#define GRUB_FONT_DEFAULT_SIZE 16
#define GRUB_FONT_RANGE_BLOCK 1024
struct grub_glyph_info
{
struct grub_glyph_info *next;
grub_uint32_t char_code;
int width;
int height;
int x_ofs;
int y_ofs;
int device_width;
int bitmap_size;
grub_uint8_t bitmap[0];
};
enum file_formats
{
PF2,
ASCII_BITMAPS
};
#define GRUB_FONT_FLAG_BOLD 1
#define GRUB_FONT_FLAG_NOBITMAP 2
#define GRUB_FONT_FLAG_NOHINTING 4
#define GRUB_FONT_FLAG_FORCEHINT 8
struct grub_font_info
{
char* name;
int style;
int desc;
int asce;
int size;
int max_width;
int max_height;
int min_y;
int max_y;
int flags;
int num_range;
grub_uint32_t *ranges;
struct grub_glyph_info *glyph;
};
static struct option options[] =
{
{"output", required_argument, 0, 'o'},
{"name", required_argument, 0, 'n'},
{"index", required_argument, 0, 'i'},
{"range", required_argument, 0, 'r'},
{"size", required_argument, 0, 's'},
{"desc", required_argument, 0, 'd'},
{"asce", required_argument, 0, 'c'},
{"bold", no_argument, 0, 'b'},
{"no-bitmap", no_argument, 0, 0x100},
{"no-hinting", no_argument, 0, 0x101},
{"force-autohint", no_argument, 0, 'a'},
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'V'},
{"verbose", no_argument, 0, 'v'},
{"ascii-bitmaps", no_argument, 0, 0x102},
{0, 0, 0, 0}
};
int font_verbosity;
static void
usage (int status)
{
if (status)
fprintf (stderr, "Try `%s --help' for more information.\n", program_name);
else
printf ("\
Usage: %s [OPTIONS] FONT_FILES\n\
\nOptions:\n\
-o, --output=FILE_NAME set output file name\n\
--ascii-bitmaps save only the ASCII bitmaps\n\
-i, --index=N set face index\n\
-r, --range=A-B[,C-D] set font range\n\
-n, --name=S set font family name\n\
-s, --size=N set font size\n\
-d, --desc=N set font descent\n\
-c, --asce=N set font ascent\n\
-b, --bold convert to bold font\n\
-a, --force-autohint force autohint\n\
--no-hinting disable hinting\n\
--no-bitmap ignore bitmap strikes when loading\n\
-h, --help display this message and exit\n\
-V, --version print version information and exit\n\
-v, --verbose print verbose messages\n\
\n\
Report bugs to <%s>.\n", program_name, PACKAGE_BUGREPORT);
exit (status);
}
void
add_pixel (grub_uint8_t **data, int *mask, int not_blank)
{
if (*mask == 0)
{
(*data)++;
**data = 0;
*mask = 128;
}
if (not_blank)
**data |= *mask;
*mask >>= 1;
}
void
add_char (struct grub_font_info *font_info, FT_Face face,
grub_uint32_t char_code)
{
struct grub_glyph_info *glyph_info, **p_glyph;
int width, height;
grub_uint8_t *data;
int mask, i, j, bitmap_size;
FT_GlyphSlot glyph;
int flag = FT_LOAD_RENDER | FT_LOAD_MONOCHROME;
if (font_info->flags & GRUB_FONT_FLAG_NOBITMAP)
flag |= FT_LOAD_NO_BITMAP;
if (font_info->flags & GRUB_FONT_FLAG_NOHINTING)
flag |= FT_LOAD_NO_HINTING;
else if (font_info->flags & GRUB_FONT_FLAG_FORCEHINT)
flag |= FT_LOAD_FORCE_AUTOHINT;
if (FT_Load_Char (face, char_code, flag))
return;
glyph = face->glyph;
if (font_info->flags & GRUB_FONT_FLAG_BOLD)
FT_GlyphSlot_Embolden (glyph);
p_glyph = &font_info->glyph;
while ((*p_glyph) && ((*p_glyph)->char_code > char_code))
{
p_glyph = &(*p_glyph)->next;
}
/* Ignore duplicated glyph. */
if ((*p_glyph) && ((*p_glyph)->char_code == char_code))
return;
width = glyph->bitmap.width;
height = glyph->bitmap.rows;
bitmap_size = ((width * height + 7) / 8);
glyph_info = xmalloc (sizeof (struct grub_glyph_info) + bitmap_size);
glyph_info->bitmap_size = bitmap_size;
glyph_info->next = *p_glyph;
*p_glyph = glyph_info;
glyph_info->char_code = char_code;
glyph_info->width = width;
glyph_info->height = height;
glyph_info->x_ofs = glyph->bitmap_left;
glyph_info->y_ofs = glyph->bitmap_top - height;
glyph_info->device_width = glyph->metrics.horiAdvance / 64;
if (width > font_info->max_width)
font_info->max_width = width;
if (height > font_info->max_height)
font_info->max_height = height;
if (glyph_info->y_ofs < font_info->min_y && glyph_info->y_ofs > -font_info->size)
font_info->min_y = glyph_info->y_ofs;
if (glyph_info->y_ofs + height > font_info->max_y)
font_info->max_y = glyph_info->y_ofs + height;
mask = 0;
data = &glyph_info->bitmap[0] - 1;
for (j = 0; j < height; j++)
for (i = 0; i < width; i++)
add_pixel (&data, &mask,
glyph->bitmap.buffer[i / 8 + j * glyph->bitmap.pitch] &
(1 << (7 - (i & 7))));
}
void
add_font (struct grub_font_info *font_info, FT_Face face)
{
if (font_info->num_range)
{
int i;
grub_uint32_t j;
for (i = 0; i < font_info->num_range; i++)
for (j = font_info->ranges[i * 2]; j <= font_info->ranges[i * 2 + 1];
j++)
add_char (font_info, face, j);
}
else
{
grub_uint32_t char_code, glyph_index;
for (char_code = FT_Get_First_Char (face, &glyph_index);
glyph_index;
char_code = FT_Get_Next_Char (face, char_code, &glyph_index))
add_char (font_info, face, char_code);
}
}
void
write_string_section (char *name, char *str, int* offset, FILE* file)
{
grub_uint32_t leng, leng_be32;
leng = strlen (str) + 1;
leng_be32 = grub_cpu_to_be32 (leng);
grub_util_write_image (name, 4, file);
grub_util_write_image ((char *) &leng_be32, 4, file);
grub_util_write_image (str, leng, file);
*offset += 8 + leng;
}
void
write_be16_section (char *name, grub_uint16_t data, int* offset, FILE* file)
{
grub_uint32_t leng;
leng = grub_cpu_to_be32 (2);
data = grub_cpu_to_be16 (data);
grub_util_write_image (name, 4, file);
grub_util_write_image ((char *) &leng, 4, file);
grub_util_write_image ((char *) &data, 2, file);
*offset += 10;
}
void
print_glyphs (struct grub_font_info *font_info)
{
int num;
struct grub_glyph_info *glyph;
char line[512];
for (glyph = font_info->glyph, num = 0; glyph; glyph = glyph->next, num++)
{
int x, y, xmax, xmin, ymax, ymin;
grub_uint8_t *bitmap, mask;
printf ("\nGlyph #%d, U+%04x\n", num, glyph->char_code);
printf ("Width %d, Height %d, X offset %d, Y offset %d, Device width %d\n",
glyph->width, glyph->height, glyph->x_ofs, glyph->y_ofs,
glyph->device_width);
xmax = glyph->x_ofs + glyph->width;
if (xmax < glyph->device_width)
xmax = glyph->device_width;
xmin = glyph->x_ofs;
if (xmin > 0)
xmin = 0;
ymax = glyph->y_ofs + glyph->height;
if (ymax < font_info->asce)
ymax = font_info->asce;
ymin = glyph->y_ofs;
if (ymin > - font_info->desc)
ymin = - font_info->desc;
bitmap = glyph->bitmap;
mask = 0x80;
for (y = ymax - 1; y >= ymin; y--)
{
int line_pos;
line_pos = 0;
for (x = xmin; x < xmax; x++)
{
if ((x >= glyph->x_ofs) &&
(x < glyph->x_ofs + glyph->width) &&
(y >= glyph->y_ofs) &&
(y < glyph->y_ofs + glyph->height))
{
line[line_pos++] = (*bitmap & mask) ? '#' : '_';
mask >>= 1;
if (mask == 0)
{
mask = 0x80;
bitmap++;
}
}
else if ((x >= 0) &&
(x < glyph->device_width) &&
(y >= - font_info->desc) &&
(y < font_info->asce))
{
line[line_pos++] = ((x == 0) || (y == 0)) ? '+' : '.';
}
else
line[line_pos++] = '*';
}
line[line_pos] = 0;
printf ("%s\n", line);
}
}
}
void
write_font_ascii_bitmap (struct grub_font_info *font_info, char *output_file)
{
FILE *file;
struct grub_glyph_info *glyph;
int num;
file = fopen (output_file, "wb");
if (! file)
grub_util_error ("Can\'t write to file %s.", output_file);
int correct_size;
for (glyph = font_info->glyph, num = 0; glyph; glyph = glyph->next, num++)
{
correct_size = 1;
if (glyph->width != 8 || glyph->height != 16)
{
/* printf ("Width or height from glyph U+%04x not supported, skipping.\n", glyph->char_code); */
correct_size = 0;
}
int row;
for (row = 0; row < glyph->height; row++)
{
if (correct_size)
fwrite (&glyph->bitmap[row], sizeof(glyph->bitmap[row]), 1, file);
else
fwrite (&correct_size, 1, 1, file);
}
}
fclose (file);
}
void
write_font_pf2 (struct grub_font_info *font_info, char *output_file)
{
FILE *file;
grub_uint32_t leng, data;
char style_name[20], *font_name;
struct grub_glyph_info *cur, *pre;
int num, offset;
file = fopen (output_file, "wb");
if (! file)
grub_util_error ("can\'t write to file %s.", output_file);
offset = 0;
leng = grub_cpu_to_be32 (4);
grub_util_write_image (FONT_FORMAT_SECTION_NAMES_FILE,
sizeof(FONT_FORMAT_SECTION_NAMES_FILE) - 1, file);
grub_util_write_image ((char *) &leng, 4, file);
grub_util_write_image (FONT_FORMAT_PFF2_MAGIC, 4, file);
offset += 12;
if (! font_info->name)
font_info->name = "Unknown";
if (font_info->flags & GRUB_FONT_FLAG_BOLD)
font_info->style |= FT_STYLE_FLAG_BOLD;
style_name[0] = 0;
if (font_info->style & FT_STYLE_FLAG_BOLD)
strcpy (style_name, " Bold");
if (font_info->style & FT_STYLE_FLAG_ITALIC)
strcat (style_name, " Italic");
if (! style_name[0])
strcpy (style_name, " Regular");
font_name = xasprintf ("%s %s %d", font_info->name, &style_name[1],
font_info->size);
write_string_section (FONT_FORMAT_SECTION_NAMES_FONT_NAME,
font_name, &offset, file);
write_string_section (FONT_FORMAT_SECTION_NAMES_FAMILY,
font_info->name, &offset, file);
write_string_section (FONT_FORMAT_SECTION_NAMES_WEIGHT,
(font_info->style & FT_STYLE_FLAG_BOLD) ?
"bold" : "normal",
&offset, file);
write_string_section (FONT_FORMAT_SECTION_NAMES_SLAN,
(font_info->style & FT_STYLE_FLAG_ITALIC) ?
"italic" : "normal",
&offset, file);
write_be16_section (FONT_FORMAT_SECTION_NAMES_POINT_SIZE,
font_info->size, &offset, file);
write_be16_section (FONT_FORMAT_SECTION_NAMES_MAX_CHAR_WIDTH,
font_info->max_width, &offset, file);
write_be16_section (FONT_FORMAT_SECTION_NAMES_MAX_CHAR_HEIGHT,
font_info->max_height, &offset, file);
if (! font_info->desc)
{
if (font_info->min_y >= 0)
font_info->desc = 1;
else
font_info->desc = - font_info->min_y;
}
if (! font_info->asce)
{
if (font_info->max_y <= 0)
font_info->asce = 1;
else
font_info->asce = font_info->max_y;
}
write_be16_section (FONT_FORMAT_SECTION_NAMES_ASCENT,
font_info->asce, &offset, file);
write_be16_section (FONT_FORMAT_SECTION_NAMES_DESCENT,
font_info->desc, &offset, file);
if (font_verbosity > 0)
{
printf ("Font name: %s\n", font_name);
printf ("Max width: %d\n", font_info->max_width);
printf ("Max height: %d\n", font_info->max_height);
printf ("Font ascent: %d\n", font_info->asce);
printf ("Font descent: %d\n", font_info->desc);
}
num = 0;
pre = 0;
cur = font_info->glyph;
while (cur)
{
struct grub_glyph_info *nxt;
nxt = cur->next;
cur->next = pre;
pre = cur;
cur = nxt;
num++;
}
font_info->glyph = pre;
if (font_verbosity > 0)
printf ("Number of glyph: %d\n", num);
leng = grub_cpu_to_be32 (num * 9);
grub_util_write_image (FONT_FORMAT_SECTION_NAMES_CHAR_INDEX,
sizeof(FONT_FORMAT_SECTION_NAMES_CHAR_INDEX) - 1,
file);
grub_util_write_image ((char *) &leng, 4, file);
offset += 8 + num * 9 + 8;
for (cur = font_info->glyph; cur; cur = cur->next)
{
data = grub_cpu_to_be32 (cur->char_code);
grub_util_write_image ((char *) &data, 4, file);
data = 0;
grub_util_write_image ((char *) &data, 1, file);
data = grub_cpu_to_be32 (offset);
grub_util_write_image ((char *) &data, 4, file);
offset += 10 + cur->bitmap_size;
}
leng = 0xffffffff;
grub_util_write_image (FONT_FORMAT_SECTION_NAMES_DATA,
sizeof(FONT_FORMAT_SECTION_NAMES_DATA) - 1, file);
grub_util_write_image ((char *) &leng, 4, file);
for (cur = font_info->glyph; cur; cur = cur->next)
{
data = grub_cpu_to_be16 (cur->width);
grub_util_write_image ((char *) &data, 2, file);
data = grub_cpu_to_be16 (cur->height);
grub_util_write_image ((char *) &data, 2, file);
data = grub_cpu_to_be16 (cur->x_ofs);
grub_util_write_image ((char *) &data, 2, file);
data = grub_cpu_to_be16 (cur->y_ofs);
grub_util_write_image ((char *) &data, 2, file);
data = grub_cpu_to_be16 (cur->device_width);
grub_util_write_image ((char *) &data, 2, file);
grub_util_write_image ((char *) &cur->bitmap[0], cur->bitmap_size, file);
}
fclose (file);
}
int
main (int argc, char *argv[])
{
struct grub_font_info font_info;
FT_Library ft_lib;
int font_index = 0;
int font_size = 0;
char *output_file = NULL;
enum file_formats file_format = PF2;
memset (&font_info, 0, sizeof (font_info));
set_program_name (argv[0]);
grub_util_init_nls ();
/* Check for options. */
while (1)
{
int c = getopt_long (argc, argv, "bao:n:i:s:d:r:hVv", options, 0);
if (c == -1)
break;
else
switch (c)
{
case 'b':
font_info.flags |= GRUB_FONT_FLAG_BOLD;
break;
case 0x100:
font_info.flags |= GRUB_FONT_FLAG_NOBITMAP;
break;
case 0x101:
font_info.flags |= GRUB_FONT_FLAG_NOHINTING;
break;
case 'a':
font_info.flags |= GRUB_FONT_FLAG_FORCEHINT;
break;
case 'o':
output_file = optarg;
break;
case 'n':
font_info.name = optarg;
break;
case 'i':
font_index = strtoul (optarg, NULL, 0);
break;
case 's':
font_size = strtoul (optarg, NULL, 0);
break;
case 'r':
{
char *p = optarg;
while (1)
{
grub_uint32_t a, b;
a = strtoul (p, &p, 0);
if (*p != '-')
grub_util_error ("invalid font range");
b = strtoul (p + 1, &p, 0);
if ((font_info.num_range & (GRUB_FONT_RANGE_BLOCK - 1)) == 0)
font_info.ranges = xrealloc (font_info.ranges,
(font_info.num_range +
GRUB_FONT_RANGE_BLOCK) *
sizeof (grub_uint32_t) * 2);
font_info.ranges[font_info.num_range * 2] = a;
font_info.ranges[font_info.num_range * 2 + 1] = b;
font_info.num_range++;
if (*p)
{
if (*p != ',')
grub_util_error ("invalid font range");
else
p++;
}
else
break;
}
break;
}
case 'd':
font_info.desc = strtoul (optarg, NULL, 0);
break;
case 'e':
font_info.asce = strtoul (optarg, NULL, 0);
break;
case 'h':
usage (0);
break;
case 'V':
printf ("%s (%s) %s\n", program_name, PACKAGE_NAME, PACKAGE_VERSION);
return 0;
case 'v':
font_verbosity++;
break;
case 0x102:
file_format = ASCII_BITMAPS;
break;
default:
usage (1);
break;
}
}
if (file_format == ASCII_BITMAPS && font_info.num_range > 0)
{
grub_util_error ("Option --ascii-bitmaps doesn't accept ranges (use ASCII).");
return 1;
}
else if (file_format == ASCII_BITMAPS)
{
font_info.ranges = xrealloc (font_info.ranges,
GRUB_FONT_RANGE_BLOCK *
sizeof (grub_uint32_t) * 2);
font_info.ranges[0] = (grub_uint32_t) 0x00;
font_info.ranges[1] = (grub_uint32_t) 0x7f;
font_info.num_range = 1;
}
if (! output_file)
grub_util_error ("no output file is specified");
if (FT_Init_FreeType (&ft_lib))
grub_util_error ("FT_Init_FreeType fails");
for (; optind < argc; optind++)
{
FT_Face ft_face;
int size;
if (FT_New_Face (ft_lib, argv[optind], font_index, &ft_face))
{
grub_util_info ("can't open file %s, index %d", argv[optind],
font_index);
continue;
}
if ((! font_info.name) && (ft_face->family_name))
font_info.name = xstrdup (ft_face->family_name);
size = font_size;
if (! size)
{
if ((ft_face->face_flags & FT_FACE_FLAG_SCALABLE) ||
(! ft_face->num_fixed_sizes))
size = GRUB_FONT_DEFAULT_SIZE;
else
size = ft_face->available_sizes[0].height;
}
font_info.style = ft_face->style_flags;
font_info.size = size;
FT_Set_Pixel_Sizes (ft_face, size, size);
add_font (&font_info, ft_face);
FT_Done_Face (ft_face);
}
FT_Done_FreeType (ft_lib);
if (file_format == PF2)
write_font_pf2 (&font_info, output_file);
else if (file_format == ASCII_BITMAPS)
write_font_ascii_bitmap (&font_info, output_file);
if (font_verbosity > 1)
print_glyphs (&font_info);
return 0;
}
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