sptobdf.c   [plain text]

/* $Xorg: sptobdf.c,v 1.4 2001/02/09 02:04:00 xorgcvs Exp $ */
/*
 * Copyright 1990, 1991 Network Computing Devices;
 * Portions Copyright 1987 by Digital Equipment Corporation
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the names of Network Computing Devices and 
 * Digital not be used in advertising or publicity pertaining to 
 * distribution of the software without specific, written prior permission.  
 * Network Computing Devices and Digital make no representations about the
 * suitability of this software for any purpose.  It is provided "as is"
 * without express or implied warranty.
 *
 * NETWORK COMPUTING DEVICES AND DIGITAL DISCLAIM ALL WARRANTIES WITH
 * REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS, IN NO EVENT SHALL NETWORK COMPUTING DEVICES OR DIGITAL BE
 * LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 * Dave Lemke
 */

/*

Copyright 1987, 1994, 1998  The Open Group

Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.

The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of The Open Group shall
not be used in advertising or otherwise to promote the sale, use or
other dealings in this Software without prior written authorization
from The Open Group.

*/

/*
 * Speedo outline to BFD format converter
 */

#include	<stdio.h>
#include	"speedo.h"

#ifdef EXTRAFONTS
#include	"ncdkeys.h"
#else
#include	"keys.h"
#endif

#include	"iso8859.h"

#define	MAX_BITS	1024

#define	BBOX_CLIP

static char line_of_bits[MAX_BITS + 1];

static FILE *fp;
static ufix16 char_index,
            char_id;
static buff_t font;
static buff_t char_data;
static ufix8 *f_buffer,
           *c_buffer;
static ufix16 mincharsize;
static fix15 cur_y;
static fix15 bit_width,
            bit_height;

static ufix8 key[] =
{
    KEY0,
    KEY1,
    KEY2,
    KEY3,
    KEY4,
    KEY5,
    KEY6,
    KEY7,
    KEY8
};				/* Font decryption key */


static char *progname;
static char *fontname = NULL;
static char *fontfile = NULL;

static int  point_size = 120;
static int  x_res = 72;
static int  y_res = 72;
static int  quality = 0;
static int  iso_encoding = 1;

static int  num_props = 7;
static int  stretch = 120;

static specs_t specs;

static void dump_header();

static void
usage()
{
    fprintf(stderr, "Usage: %s [-xres x resolution] [-yres y resolution]\n\t[-ptsize pointsize] [-fn fontname] [-q quality (0-1)] fontfile\n", progname);
    fprintf(stderr, "Where:\n");
    fprintf(stderr, "-xres specifies the X resolution (72)\n");
    fprintf(stderr, "-yres specifies the Y resolution (72)\n");
    fprintf(stderr, "-pts specifies the pointsize in decipoints (120)\n");
    fprintf(stderr, "-fn specifies the font name (full Bitstream name)\n");
    fprintf(stderr, "-q specifies the font quality [0-1] (0)\n");
    fprintf(stderr, "\n");
    exit(0);
}

static      fix15
read_2b(ptr)
    ufix8      *ptr;
{
    fix15       tmp;

    tmp = *ptr++;
    tmp = (tmp << 8) + *ptr;
    return tmp;
}

static      fix31
read_4b(ptr)
    ufix8      *ptr;
{
    fix31       tmp;

    tmp = *ptr++;
    tmp = (tmp << 8) + *ptr++;
    tmp = (tmp << 8) + *ptr++;
    tmp = (tmp << 8) + *ptr;
    return tmp;
}

static void
process_args(ac, av)
    int         ac;
    char      **av;
{
    int         i;

    for (i = 1; i < ac; i++) {
	if (!strncmp(av[i], "-xr", 3)) {
	    if (av[i + 1]) {
		x_res = atoi(av[++i]);
	    } else
		usage();
	} else if (!strncmp(av[i], "-yr", 3)) {
	    if (av[i + 1]) {
		y_res = atoi(av[++i]);
	    } else
		usage();
	} else if (!strncmp(av[i], "-pt", 3)) {
	    if (av[i + 1]) {
		point_size = atoi(av[++i]);
	    } else
		usage();
	} else if (!strncmp(av[i], "-fn", 3)) {
	    if (av[i + 1]) {
		fontname = av[++i];
	    } else
		usage();
	} else if (!strncmp(av[i], "-q", 2)) {
	    if (av[i + 1]) {
		quality = atoi(av[++i]);
	    } else
		usage();
	} else if (!strncmp(av[i], "-st", 3)) {
	    if (av[i + 1]) {
		stretch = atoi(av[++i]);
	    } else
		usage();
	} else if (!strncmp(av[i], "-noni", 5)) {
	    iso_encoding = 0;
	} else if (*av[i] == '-') {
	    usage();
	} else
	    fontfile = av[i];
    }
    if (!fontfile)
	usage();
}

void
main(argc, argv)
    int         argc;
    char      **argv;
{
    ufix32      i;
    ufix8       tmp[16];
    ufix32      minbufsize;
    ufix16      cust_no;
    int         first_char_index,
                num_chars;

    progname = argv[0];
    process_args(argc, argv);
    fp = fopen(fontfile, "r");
    if (!fp) {
	fprintf(stderr, "No such font file, \"%s\"\n", fontfile);
	exit(-1);
    }
    if (fread(tmp, sizeof(ufix8), 16, fp) != 16) {
	fprintf(stderr, "error reading \"%s\"\n", fontfile);
	exit(-1);
    }
    minbufsize = (ufix32) read_4b(tmp + FH_FBFSZ);
    f_buffer = (ufix8 *) malloc(minbufsize);
    if (!f_buffer) {
	fprintf(stderr, "can't get %x bytes of memory\n", minbufsize);
	exit(-1);
    }
    fseek(fp, (ufix32) 0, 0);

    if (fread(f_buffer, sizeof(ufix8), (ufix16) minbufsize, fp) != minbufsize) {
	fprintf(stderr, "error reading file \"%s\"\n", fontfile);
	exit(-1);
    }
    mincharsize = read_2b(f_buffer + FH_CBFSZ);

    c_buffer = (ufix8 *) malloc(mincharsize);
    if (!c_buffer) {
	fprintf(stderr, "can't get %x bytes for char buffer\n", mincharsize);
	exit(-1);
    }
    /* init */
    sp_reset();

    font.org = f_buffer;
    font.no_bytes = minbufsize;

    if ((cust_no = sp_get_cust_no(font)) != CUS0) {
	fprintf(stderr, "Non-standard encryption for \"%s\"\n", fontfile);
	exit(-1);
    }
    sp_set_key(key);

    first_char_index = read_2b(f_buffer + FH_FCHRF);
    num_chars = read_2b(f_buffer + FH_NCHRL);

    /* set up specs */
    /* Note that point size is in decipoints */
    specs.pfont = &font;
    /* XXX beware of overflow */
    specs.xxmult = point_size * x_res / 720 * (1 << 16);
    specs.xymult = 0L << 16;
    specs.xoffset = 0L << 16;
    specs.yxmult = 0L << 16;
    specs.yymult = point_size * y_res / 720 * (1 << 16);
    specs.yoffset = 0L << 16;
    switch (quality) {
    case 0:
	specs.flags = 0;
	break;
    case 1:
	specs.flags = MODE_SCREEN;
	break;
    case 2:
	specs.flags = MODE_2D;
	break;
    default:
	fprintf(stderr, "bogus quality value %d\n", quality);
	break;
    }
    specs.out_info = NULL;

    if (!fontname) {
	fontname = (char *) (f_buffer + FH_FNTNM);
    }
    if (iso_encoding)
	num_chars = num_iso_chars;
    dump_header(num_chars);

    if (!sp_set_specs(&specs)) {
	fprintf(stderr, "can't set specs\n");
    } else {
	if (iso_encoding) {
	    for (i = 0; i < num_iso_chars * 2; i += 2) {
		char_index = iso_map[i + 1];
		char_id = iso_map[i];
		if (!sp_make_char(char_index)) {
		    fprintf(stderr, "can't make char %x\n", char_index);
		}
	    }
	} else {
	    for (i = 0; i < num_chars; i++) {
		char_index = i + first_char_index;
		char_id = sp_get_char_id(char_index);
		if (char_id) {
		    if (!sp_make_char(char_index)) {
			fprintf(stderr, "can't make char %x\n", char_index);
		    }
		}
	    }
	}
    }

    (void) fclose(fp);

    printf("ENDFONT\n");
    exit(0);
}

static void
dump_header(num_chars)
    ufix32      num_chars;
{
    fix15       xmin,
                ymin,
                xmax,
                ymax;
    fix15       ascent,
                descent;
    fix15       pixel_size;

    xmin = read_2b(f_buffer + FH_FXMIN);
    ymin = read_2b(f_buffer + FH_FYMIN);
    xmax = read_2b(f_buffer + FH_FXMAX);
    ymax = read_2b(f_buffer + FH_FYMAX);
    pixel_size = point_size * x_res / 720;

    printf("STARTFONT 2.1\n");
    printf("COMMENT\n");
    printf("COMMENT Generated from Bitstream Speedo outlines via sptobdf\n");
    printf("COMMENT\n");
    printf("FONT %s\n", fontname);
    printf("SIZE %d %d %d\n", pixel_size, x_res, y_res);
    printf("FONTBOUNDINGBOX %d %d %d %d\n", xmin, ymin, xmax, ymax);
    printf("STARTPROPERTIES %d\n", num_props);

    printf("RESOLUTION_X %d\n", x_res);
    printf("RESOLUTION_Y %d\n", y_res);
    printf("POINT_SIZE %d\n", point_size);
    printf("PIXEL_SIZE %d\n", pixel_size);
    printf("COPYRIGHT \"%s\"\n", f_buffer + FH_CPYRT);

    /* do some stretching here so that its isn't too tight */
    pixel_size = pixel_size * stretch / 100;
    ascent = pixel_size * 764 / 1000;	/* 764 == EM_TOP */
    descent = pixel_size - ascent;
    printf("FONT_ASCENT %d\n", ascent);
    printf("FONT_DESCENT %d\n", descent);

    printf("ENDPROPERTIES\n");
    printf("CHARS %d\n", num_chars);
}

buff_t     *
sp_load_char_data(file_offset, num, cb_offset)
    fix31       file_offset;
    fix15       num;
    fix15       cb_offset;
{
    if (fseek(fp, (long) file_offset, (int) 0)) {
	fprintf(stderr, "can't seek to char\n");
	(void) fclose(fp);
	exit(-1);
    }
    if ((num + cb_offset) > mincharsize) {
	fprintf(stderr, "char buf overflow\n");
	(void) fclose(fp);
	exit(-2);
    }
    if (fread((c_buffer + cb_offset), sizeof(ufix8), num, fp) != num) {
	fprintf(stderr, "can't get char data\n");
	exit(-1);
    }
    char_data.org = (ufix8 *) c_buffer + cb_offset;
    char_data.no_bytes = num;

    return &char_data;
}

/*
 * Called by Speedo character generator to report an error.
 *
 *  Since character data not available is one of those errors
 *  that happens many times, don't report it to user
 */
void
sp_report_error(n)
    fix15       n;
{
    switch (n) {
    case 1:
	fprintf(stderr, "Insufficient font data loaded\n");
	break;
    case 3:
	fprintf(stderr, "Transformation matrix out of range\n");
	break;
    case 4:
	fprintf(stderr, "Font format error\n");
	break;
    case 5:
	fprintf(stderr, "Requested specs not compatible with output module\n");
	break;
    case 7:
	fprintf(stderr, "Intelligent transformation requested but not supported\n");
	break;
    case 8:
	fprintf(stderr, "Unsupported output mode requested\n");
	break;
    case 9:
	fprintf(stderr, "Extended font loaded but only compact fonts supported\n");
	break;
    case 10:
	fprintf(stderr, "Font specs not set prior to use of font\n");
	break;
    case 12:
	break;
    case 13:
	fprintf(stderr, "Track kerning data not available()\n");
	break;
    case 14:
	fprintf(stderr, "Pair kerning data not available()\n");
	break;
    default:
	fprintf(stderr, "report_error(%d)\n", n);
	break;
    }
}

void
sp_open_bitmap(x_set_width, y_set_width, xorg, yorg, xsize, ysize)
    fix31       x_set_width;
    fix31       y_set_width;
    fix31       xorg;
    fix31       yorg;
    fix15       xsize;
    fix15       ysize;
{
    fix15       i;
    fix15       off_horz;
    fix15       off_vert;
    fix31       width,
                pix_width;
    bbox_t      bb;

    bit_width = xsize;

    bit_height = ysize;
    off_horz = (fix15) ((xorg + 32768L) >> 16);
    off_vert = (fix15) ((yorg + 32768L) >> 16);

    if (bit_width > MAX_BITS) {

#ifdef DEBUG
	fprintf(stderr, "char wider than max bits -- truncated\n");
#endif

	bit_width = MAX_BITS;
    }
    width = sp_get_char_width(char_index);
    pix_width = width * (specs.xxmult / 65536L) +
	((ufix32) width * ((ufix32) specs.xxmult & 0xffff)) / 65536L;
    pix_width /= 65536L;

    width = (pix_width * 7200L) / (point_size * y_res);

    (void) sp_get_char_bbox(char_index, &bb);
    bb.xmin >>= 16;
    bb.ymin >>= 16;
    bb.xmax >>= 16;
    bb.ymax >>= 16;

#ifdef DEBUG
    if ((bb.xmax - bb.xmin) != bit_width)
	fprintf(stderr, "bbox & width mismatch 0x%x (%d) (%d vs %d)\n",
		char_index, char_id, (bb.xmax - bb.xmin), bit_width);
    if ((bb.ymax - bb.ymin) != bit_height)
	fprintf(stderr, "bbox & height mismatch 0x%x (%d) (%d vs %d)\n",
		char_index, char_id, (bb.ymax - bb.ymin), bit_height);
    if (bb.xmin != off_horz)
	fprintf(stderr, "x min mismatch 0x%x (%d) (%d vs %d)\n",
		char_index, char_id, bb.xmin, off_horz);
    if (bb.ymin != off_vert)
	fprintf(stderr, "y min mismatch 0x%x (%d) (%d vs %d)\n",
		char_index, char_id, bb.ymin, off_vert);
#endif

#ifdef BBOX_CLIP
    bit_width = bb.xmax - bb.xmin;
    bit_height = bb.ymax - bb.ymin;
    off_horz = bb.xmin;
    off_vert = bb.ymin;
#endif

    /* XXX kludge to handle space */
    if (bb.xmin == 0 && bb.ymin == 0 && bb.xmax == 0 && bb.ymax == 0 &&
	    width) {
	bit_width = 1;
	bit_height = 1;
    }
    printf("STARTCHAR %d\n", char_id);
    printf("ENCODING %d\n", char_id);
    printf("SWIDTH %d 0\n", width);
    printf("DWIDTH %d 0\n", pix_width);
    printf("BBX %d %d %d %d\n", bit_width, bit_height, off_horz, off_vert);
    printf("BITMAP\n");

    for (i = 0; i < bit_width; i++) {
	line_of_bits[i] = '.';
    }
    line_of_bits[bit_width] = '\0';
    cur_y = 0;
}

static void
dump_line(line)
    ufix8      *line;
{
    int         bit;
    unsigned    byte;

    byte = 0;
    for (bit = 0; bit < bit_width; bit++) {
	if (line[bit] == 'X')
	    byte |= (1 << (7 - (bit & 7)));
	if ((bit & 7) == 7) {
	    printf("%02X", byte);
	    byte = 0;
	}
    }
    if ((bit & 7) != 0)
	printf("%02X", byte);
    printf("\n");
}

#ifdef BBOX_CLIP
static fix15 last_y;
static int  trunc = 0;

#endif

void
sp_set_bitmap_bits(y, xbit1, xbit2)
    fix15       y;
    fix15       xbit1;
    fix15       xbit2;
{
    fix15       i;

    if (xbit1 > MAX_BITS) {

#ifdef DEBUG
	fprintf(stderr, "run wider than max bits -- truncated\n");
#endif

	xbit1 = MAX_BITS;
    }
    if (xbit2 > MAX_BITS) {

#ifdef DEBUG
	fprintf(stderr, "run wider than max bits -- truncated\n");
#endif

	xbit2 = MAX_BITS;
    }
    while (cur_y != y) {
	dump_line(line_of_bits);
	for (i = 0; i < bit_width; i++) {
	    line_of_bits[i] = '.';
	}
	cur_y++;
    }

#ifdef BBOX_CLIP
    last_y = y;
    if (y >= bit_height) {

#ifdef DEBUG
	fprintf(stderr,
		"y value is larger than height 0x%x (%d) -- truncated\n",
		char_index, char_id);
#endif

	trunc = 1;
	return;
    }
#endif				/* BBOX_CLIP */

    for (i = xbit1; i < xbit2; i++) {
	line_of_bits[i] = 'X';
    }
}

void
sp_close_bitmap()
{

#ifdef BBOX_CLIP
    int         i;

    if (!trunc)
	dump_line(line_of_bits);
    trunc = 0;


    last_y++;
    while (last_y < bit_height) {

#ifdef DEBUG
	fprintf(stderr, "padding out height for 0x%x (%d)\n",
		char_index, char_id);
#endif

	for (i = 0; i < bit_width; i++) {
	    line_of_bits[i] = '.';
	}
	dump_line(line_of_bits);
	last_y++;
    }

#else
    dump_line(line_of_bits);
#endif

    printf("ENDCHAR\n");
}

/* outline stubs */
void
sp_open_outline()
{
}

void
sp_start_new_char()
{
}

void
sp_start_contour()
{
}

void
sp_curve_to()
{
}

void
sp_line_to()
{
}

void
sp_close_contour()
{
}

void
sp_close_outline()
{
}