emo/busybox
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

loadfont/setfont: optional PSF2 font support

Browse Source 
Signed-off-by: Harald Becker <ralda@gmx.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Harald Becker 2010-02-21 13:10:26 +01:00 committed by Denys Vlasenko
parent bef5711dab
commit 8ce1dc03c1
2 changed files with 223 additions and 107 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
console-tools/Config.in
View File

@ -135,4 +135,21 @@ config SHOWKEY
help
Shows keys pressed.
comment "Common options for loadfont and setfont"
depends on LOADFONT || SETFONT
config FEATURE_LOADFONT_PSF2
bool "Support for PSF2 console fonts"
default n
depends on LOADFONT || SETFONT
help
Support PSF2 console fonts.
config FEATURE_LOADFONT_RAW
bool "Support for old (raw) console fonts"
default n
depends on LOADFONT || SETFONT
help
Support old (raw) console fonts.
endmenu

285
console-tools/loadfont.c
View File

@ -21,13 +21,10 @@ struct console_font_op {
unsigned charcount;
unsigned char *data; /* font data with height fixed to 32 */
};
# define KD_FONT_OP_SET 0 /* Set font */
# define KD_FONT_OP_GET 1 /* Get font */
#define KD_FONT_OP_SET_DEFAULT 2 /* Set font to default,
data points to name / NULL */
# define KD_FONT_OP_SET_DEFAULT 2 /* Set font to default, data points to name / NULL */
# define KD_FONT_OP_COPY 3 /* Copy from another console */
# define KD_FONT_FLAG_OLD 0x80000000 /* Invoked via old interface */
# define KD_FONT_FLAG_DONT_RECALC 1 /* Don't call adjust_height() */
/* (Used internally for PIO_FONT support) */
@ -35,77 +32,126 @@ struct console_font_op {
enum {
PSF_MAGIC1 = 0x36,
PSF_MAGIC2 = 0x04,
PSF_MODE512 = 0x01,
PSF_MODEHASTAB = 0x02,
PSF_MAXMODE = 0x03,
PSF_SEPARATOR = 0xffff
PSF1_MAGIC0 = 0x36,
PSF1_MAGIC1 = 0x04,
PSF1_MODE512 = 0x01,
PSF1_MODEHASTAB = 0x02,
PSF1_MODEHASSEQ = 0x04,
PSF1_MAXMODE = 0x05,
PSF1_STARTSEQ = 0xfffe,
PSF1_SEPARATOR = 0xffff,
};
struct psf_header {
unsigned char magic1, magic2; /* Magic number */
struct psf1_header {
unsigned char magic[2]; /* Magic number */
unsigned char mode; /* PSF font mode */
unsigned char charsize; /* Character size */
};
#define PSF_MAGIC_OK(x) ((x)->magic1 == PSF_MAGIC1 && (x)->magic2 == PSF_MAGIC2)
#define psf1h(x) ((struct psf1_header*)(x))
static void do_loadfont(int fd, unsigned char *inbuf, int unit, int fontsize)
#define PSF1_MAGIC_OK(x) ( \
(x)->magic[0] == PSF1_MAGIC0 \
&& (x)->magic[1] == PSF1_MAGIC1 \
)
#if ENABLE_FEATURE_LOADFONT_PSF2
enum {
PSF2_MAGIC0 = 0x72,
PSF2_MAGIC1 = 0xb5,
PSF2_MAGIC2 = 0x4a,
PSF2_MAGIC3 = 0x86,
PSF2_HAS_UNICODE_TABLE = 0x01,
PSF2_MAXVERSION = 0,
PSF2_STARTSEQ = 0xfe,
PSF2_SEPARATOR = 0xff
};
struct psf2_header {
unsigned char magic[4];
unsigned int version;
unsigned int headersize; /* offset of bitmaps in file */
unsigned int flags;
unsigned int length; /* number of glyphs */
unsigned int charsize; /* number of bytes for each character */
unsigned int height; /* max dimensions of glyphs */
unsigned int width; /* charsize = height * ((width + 7) / 8) */
};
#define psf2h(x) ((struct psf2_header*)(x))
#define PSF2_MAGIC_OK(x) ( \
(x)->magic[0] == PSF2_MAGIC0 \
&& (x)->magic[1] == PSF2_MAGIC1 \
&& (x)->magic[2] == PSF2_MAGIC2 \
&& (x)->magic[3] == PSF2_MAGIC3 \
)
#endif /* ENABLE_FEATURE_LOADFONT_PSF2 */
static void do_loadfont(int fd, unsigned char *inbuf, int height, int width, int charsize, int fontsize)
{
char *buf;
unsigned char *buf;
int charwidth = 32 * ((width+7)/8);
int i;
if (unit < 1 || unit > 32)
bb_error_msg_and_die("bad character size %d", unit);
if (height < 1 || height > 32 || width < 1 || width > 32)
bb_error_msg_and_die("bad character size %dx%d", height, width);
buf = xzalloc(16 * 1024);
buf = xzalloc(charwidth * ((fontsize < 128) ? 128 : fontsize));
for (i = 0; i < fontsize; i++)
memcpy(buf + (32 * i), inbuf + (unit * i), unit);
memcpy(buf + (i*charwidth), inbuf + (i*charsize), charsize);
{ /* KDFONTOP */
struct console_font_op cfo;
cfo.op = KD_FONT_OP_SET;
cfo.flags = 0;
cfo.width = 8;
cfo.height = unit;
cfo.width = width;
cfo.height = height;
cfo.charcount = fontsize;
cfo.data = (void*)buf;
#if 0
if (!ioctl_or_perror(fd, KDFONTOP, &cfo, "KDFONTOP ioctl failed (will try PIO_FONTX)"))
goto ret; /* success */
#else
cfo.data = buf;
xioctl(fd, KDFONTOP, &cfo);
#endif
}
#if 0
/* These ones do not honour -C tty (they set font on current tty regardless)
* On x86, this distinction is visible on framebuffer consoles
* (regular character consoles may have only one shared font anyway)
*/
#if defined(PIO_FONTX) && !defined(__sparc__)
{
struct consolefontdesc cfd;
cfd.charcount = fontsize;
cfd.charheight = unit;
cfd.chardata = buf;
if (!ioctl_or_perror(fd, PIO_FONTX, &cfd, "PIO_FONTX ioctl failed (will try PIO_FONT)"))
goto ret; /* success */
}
#endif
xioctl(fd, PIO_FONT, buf);
ret:
#endif /* 0 */
free(buf);
}
static void do_loadtable(int fd, unsigned char *inbuf, int tailsz, int fontsize)
/*
* Format of the Unicode information:
*
* For each font position <uc>*<seq>*<term>
* where <uc> is a 2-byte little endian Unicode value (PSF1)
* or an UTF-8 coded value (PSF2),
* <seq> = <ss><uc><uc>*, <ss> = psf1 ? 0xFFFE : 0xFE,
* <term> = psf1 ? 0xFFFF : 0xFF.
* and * denotes zero or more occurrences of the preceding item.
*
* Semantics:
* The leading <uc>* part gives Unicode symbols that are all
* represented by this font position. The following sequences
* are sequences of Unicode symbols - probably a symbol
* together with combining accents - also represented by
* this font position.
*
* Example:
* At the font position for a capital A-ring glyph, we
* may have:
* 00C5,212B,FFFE,0041,030A,FFFF
* Some font positions may be described by sequences only,
* namely when there is no precomposed Unicode value for the glyph.
*/
#if !ENABLE_FEATURE_LOADFONT_PSF2
#define do_loadtable(fd, inbuf, tailsz, fontsize, psf2) \
do_loadtable(fd, inbuf, tailsz, fontsize)
#endif
static void do_loadtable(int fd, unsigned char *inbuf, int tailsz, int fontsize, int psf2)
{
#if !ENABLE_FEATURE_LOADFONT_PSF2
/* gcc 4.3.1 code size: */
# define psf2 0 /* +0 bytes */
// const int psf2 = 0; /* +8 bytes */
// enum { psf2 = 0 }; /* +13 bytes */
#endif
struct unimapinit advice;
struct unimapdesc ud;
struct unipair *up;
@ -114,15 +160,48 @@ static void do_loadtable(int fd, unsigned char *inbuf, int tailsz, int fontsize)
uint16_t unicode;
maxct = tailsz; /* more than enough */
up = xmalloc(maxct * sizeof(struct unipair));
up = xmalloc(maxct * sizeof(*up));
for (glyph = 0; glyph < fontsize; glyph++) {
while (tailsz >= 2) {
while (tailsz > 0) {
if (!psf2) { /* PSF1 */
unicode = (((uint16_t) inbuf[1]) << 8) + inbuf[0];
tailsz -= 2;
inbuf += 2;
if (unicode == PSF_SEPARATOR)
if (unicode == PSF1_SEPARATOR)
break;
} else { /* PSF2 */
#if ENABLE_FEATURE_LOADFONT_PSF2
--tailsz;
unicode = *inbuf++;
if (unicode == PSF2_SEPARATOR) {
break;
} else if (unicode == PSF2_STARTSEQ) {
bb_error_msg_and_die("unicode sequences not implemented");
} else if (unicode >= 0xC0) {
if (unicode >= 0xFC)
unicode &= 0x01, maxct = 5;
else if (unicode >= 0xF8)
unicode &= 0x03, maxct = 4;
else if (unicode >= 0xF0)
unicode &= 0x07, maxct = 3;
else if (unicode >= 0xE0)
unicode &= 0x0F, maxct = 2;
else
unicode &= 0x1F, maxct = 1;
do {
if (tailsz <= 0 || *inbuf < 0x80 || *inbuf > 0xBF)
bb_error_msg_and_die("illegal UTF-8 character");
--tailsz;
unicode = (unicode << 6) + (*inbuf++ & 0x3F);
} while (--maxct > 0);
} else if (unicode >= 0x80) {
bb_error_msg_and_die("illegal UTF-8 character");
}
#else
return;
#endif
}
up[ct].unicode = unicode;
up[ct].fontpos = glyph;
ct++;
@ -139,58 +218,78 @@ static void do_loadtable(int fd, unsigned char *inbuf, int tailsz, int fontsize)
ud.entry_ct = ct;
ud.entries = up;
xioctl(fd, PIO_UNIMAP, &ud);
#undef psf2
}
static void do_load(int fd, struct psf_header *psfhdr, size_t len)
static void do_load(int fd, unsigned char *buffer, size_t len)
{
int unit;
int fontsize;
int hastable;
unsigned head0, head = head;
int height;
int width = 8;
int charsize;
int fontsize = 256;
int has_table = 0;
unsigned char *font = buffer;
unsigned char *table;
/* test for psf first */
if (len >= sizeof(struct psf_header) && PSF_MAGIC_OK(psfhdr)) {
if (psfhdr->mode > PSF_MAXMODE)
if (len >= sizeof(struct psf1_header) && PSF1_MAGIC_OK(psf1h(buffer))) {
if (psf1h(buffer)->mode > PSF1_MAXMODE)
bb_error_msg_and_die("unsupported psf file mode");
fontsize = ((psfhdr->mode & PSF_MODE512) ? 512 : 256);
if (psf1h(buffer)->mode & PSF1_MODE512)
fontsize = 512;
if (psf1h(buffer)->mode & PSF1_MODEHASTAB)
has_table = 1;
height = charsize = psf1h(buffer)->charsize;
font += sizeof(struct psf1_header);
} else
#if ENABLE_FEATURE_LOADFONT_PSF2
if (len >= sizeof(struct psf2_header) && PSF2_MAGIC_OK(psf2h(buffer))) {
if (psf2h(buffer)->version > PSF2_MAXVERSION)
bb_error_msg_and_die("unsupported psf file version");
fontsize = psf2h(buffer)->length;
if (psf2h(buffer)->flags & PSF2_HAS_UNICODE_TABLE)
has_table = 2;
charsize = psf2h(buffer)->charsize;
height = psf2h(buffer)->height;
width = psf2h(buffer)->width;
font += psf2h(buffer)->headersize;
} else
#endif
#if ENABLE_FEATURE_LOADFONT_RAW
if (len == 9780) { /* file with three code pages? */
charsize = height = 16;
font += 40;
} else if ((len & 0377) == 0) { /* bare font */
charsize = height = len / 256;
} else
#endif
{
bb_error_msg_and_die("input file: bad length or unsupported font type");
}
#if !defined(PIO_FONTX) || defined(__sparc__)
if (fontsize != 256)
bb_error_msg_and_die("only fontsize 256 supported");
#endif
hastable = (psfhdr->mode & PSF_MODEHASTAB);
unit = psfhdr->charsize;
head0 = sizeof(struct psf_header);
head = head0 + fontsize * unit;
if (head > len || (!hastable && head != len))
table = font + fontsize * charsize;
buffer += len;
if (table > buffer || (!has_table && table != buffer))
bb_error_msg_and_die("input file: bad length");
} else {
/* file with three code pages? */
if (len == 9780) {
head0 = 40;
unit = 16;
} else {
/* bare font */
if (len & 0377)
bb_error_msg_and_die("input file: bad length");
head0 = 0;
unit = len / 256;
}
fontsize = 256;
hastable = 0;
do_loadfont(fd, font, height, width, charsize, fontsize);
if (has_table)
do_loadtable(fd, table, buffer - table, fontsize, has_table - 1);
}
do_loadfont(fd, (unsigned char *)psfhdr + head0, unit, fontsize);
if (hastable)
do_loadtable(fd, (unsigned char *)psfhdr + head, len - head, fontsize);
}
#if ENABLE_LOADFONT
int loadfont_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int loadfont_main(int argc UNUSED_PARAM, char **argv)
{
size_t len;
struct psf_header *psfhdr;
unsigned char *buffer;
// no arguments allowed!
opt_complementary = "=0";
@ -202,11 +301,11 @@ int loadfont_main(int argc UNUSED_PARAM, char **argv)
* just read the entire file.
*/
len = 32*1024; // can't be larger
psfhdr = xmalloc_read(STDIN_FILENO, &len);
buffer = xmalloc_read(STDIN_FILENO, &len);
// xmalloc_open_zipped_read_close(filename, &len);
if (!psfhdr)
if (!buffer)
bb_perror_msg_and_die("error reading input font");
do_load(get_console_fd_or_die(), psfhdr, len);
do_load(get_console_fd_or_die(), buffer, len);
return EXIT_SUCCESS;
}
@ -269,7 +368,7 @@ int setfont_main(int argc UNUSED_PARAM, char **argv)
size_t len;
unsigned opts;
int fd;
struct psf_header *psfhdr;
unsigned char *buffer;
char *mapfilename;
const char *tty_name = CURRENT_TTY;
@ -287,10 +386,10 @@ int setfont_main(int argc UNUSED_PARAM, char **argv)
}
// load font
len = 32*1024; // can't be larger
psfhdr = xmalloc_open_zipped_read_close(*argv, &len);
if (!psfhdr)
buffer = xmalloc_open_zipped_read_close(*argv, &len);
if (!buffer)
bb_simple_perror_msg_and_die(*argv);
do_load(fd, psfhdr, len);
do_load(fd, buffer, len);
// load the screen map, if any
if (opts & 1) { // -m