44a8713bfe
destination buffer and no bounds check in the code. I've now enlarged the buffer and added a bounds check. Case closed. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14093 a1c6a512-1295-4272-9138-f99709370657
1195 lines
33 KiB
C
1195 lines
33 KiB
C
/*
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* Convert BDF files to C source and/or Rockbox .fnt file format
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*
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* Copyright (c) 2002 by Greg Haerr <greg@censoft.com>
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*
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* What fun it is converting font data...
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*
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* 09/17/02 Version 1.0
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#define ROTATE /* define this for the new, rotated format */
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/* BEGIN font.h*/
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/* loadable font magic and version #*/
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#ifdef ROTATE
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#define VERSION "RB12" /* newer version */
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#else
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#define VERSION "RB11"
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#endif
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/* bitmap_t helper macros*/
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#define BITMAP_WORDS(x) (((x)+15)/16) /* image size in words*/
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#define BITMAP_BYTES(x) (BITMAP_WORDS(x)*sizeof(bitmap_t))
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#define BITMAP_BITSPERIMAGE (sizeof(bitmap_t) * 8)
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#define BITMAP_BITVALUE(n) ((bitmap_t) (((bitmap_t) 1) << (n)))
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#define BITMAP_FIRSTBIT (BITMAP_BITVALUE(BITMAP_BITSPERIMAGE - 1))
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#define BITMAP_TESTBIT(m) ((m) & BITMAP_FIRSTBIT)
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#define BITMAP_SHIFTBIT(m) ((bitmap_t) ((m) << 1))
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typedef unsigned short bitmap_t; /* bitmap image unit size*/
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/* builtin C-based proportional/fixed font structure */
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/* based on The Microwindows Project http://microwindows.org */
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struct font {
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int maxwidth; /* max width in pixels*/
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int height; /* height in pixels*/
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int ascent; /* ascent (baseline) height*/
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int firstchar; /* first character in bitmap*/
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int size; /* font size in glyphs*/
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bitmap_t* bits; /* 16-bit right-padded bitmap data*/
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unsigned int* offset; /* offsets into bitmap data*/
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unsigned char* width; /* character widths or NULL if fixed*/
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int defaultchar; /* default char (not glyph index)*/
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int bits_size; /* # words of bitmap_t bits*/
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/* unused by runtime system, read in by convbdf*/
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unsigned int* offrot; /* offsets into rotated bitmap data*/
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char * name; /* font name*/
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char * facename; /* facename of font*/
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char * copyright; /* copyright info for loadable fonts*/
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int pixel_size;
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int descent;
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int fbbw, fbbh, fbbx, fbby;
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};
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/* END font.h*/
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#define isprefix(buf,str) (!strncmp(buf, str, strlen(str)))
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#define strequal(s1,s2) (!strcmp(s1, s2))
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#define EXTRA 300 /* # bytes extra allocation for buggy .bdf files*/
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int gen_c = 0;
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int gen_h = 0;
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int gen_fnt = 0;
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int gen_map = 1;
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int start_char = 0;
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int limit_char = 65535;
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int oflag = 0;
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char outfile[256];
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void usage(void);
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void getopts(int *pac, char ***pav);
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int convbdf(char *path);
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void free_font(struct font* pf);
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struct font* bdf_read_font(char *path);
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int bdf_read_header(FILE *fp, struct font* pf);
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int bdf_read_bitmaps(FILE *fp, struct font* pf);
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char * bdf_getline(FILE *fp, char *buf, int len);
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bitmap_t bdf_hexval(unsigned char *buf, int ndx1, int ndx2);
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int gen_c_source(struct font* pf, char *path);
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int gen_h_header(struct font* pf, char *path);
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int gen_fnt_file(struct font* pf, char *path);
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void
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usage(void)
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{
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char help[] = {
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"Usage: convbdf [options] [input-files]\n"
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" convbdf [options] [-o output-file] [single-input-file]\n"
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"Options:\n"
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" -c Convert .bdf to .c source file\n"
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" -h Convert .bdf to .h header file (to create sysfont.h)\n"
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" -f Convert .bdf to .fnt font file\n"
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" -s N Start output at character encodings >= N\n"
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" -l N Limit output to character encodings <= N\n"
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" -n Don't generate bitmaps as comments in .c file\n"
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};
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fprintf(stderr, help);
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}
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/* parse command line options*/
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void getopts(int *pac, char ***pav)
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{
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char *p;
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char **av;
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int ac;
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ac = *pac;
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av = *pav;
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while (ac > 0 && av[0][0] == '-') {
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p = &av[0][1];
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while( *p)
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switch(*p++) {
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case ' ': /* multiple -args on av[]*/
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while( *p && *p == ' ')
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p++;
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if( *p++ != '-') /* next option must have dash*/
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p = "";
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break; /* proceed to next option*/
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case 'c': /* generate .c output*/
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gen_c = 1;
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break;
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case 'h': /* generate .h output*/
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gen_h = 1;
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break;
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case 'f': /* generate .fnt output*/
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gen_fnt = 1;
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break;
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case 'n': /* don't gen bitmap comments*/
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gen_map = 0;
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break;
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case 'o': /* set output file*/
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oflag = 1;
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if (*p) {
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strcpy(outfile, p);
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while (*p && *p != ' ')
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p++;
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}
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else {
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av++; ac--;
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if (ac > 0)
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strcpy(outfile, av[0]);
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}
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break;
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case 'l': /* set encoding limit*/
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if (*p) {
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limit_char = atoi(p);
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while (*p && *p != ' ')
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p++;
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}
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else {
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av++; ac--;
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if (ac > 0)
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limit_char = atoi(av[0]);
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}
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break;
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case 's': /* set encoding start*/
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if (*p) {
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start_char = atoi(p);
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while (*p && *p != ' ')
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p++;
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}
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else {
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av++; ac--;
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if (ac > 0)
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start_char = atoi(av[0]);
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}
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break;
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default:
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fprintf(stderr, "Unknown option ignored: %c\r\n", *(p-1));
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}
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++av; --ac;
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}
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*pac = ac;
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*pav = av;
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}
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/* remove directory prefix and file suffix from full path*/
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char *basename(char *path)
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{
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char *p, *b;
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static char base[256];
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/* remove prepended path and extension*/
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b = path;
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for (p=path; *p; ++p) {
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if (*p == '/')
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b = p + 1;
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}
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strcpy(base, b);
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for (p=base; *p; ++p) {
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if (*p == '.') {
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*p = 0;
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break;
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}
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}
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return base;
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}
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int convbdf(char *path)
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{
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struct font* pf;
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int ret = 0;
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pf = bdf_read_font(path);
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if (!pf)
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exit(1);
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if (gen_c) {
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if (!oflag) {
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strcpy(outfile, basename(path));
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strcat(outfile, ".c");
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}
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ret |= gen_c_source(pf, outfile);
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}
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if (gen_h) {
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if (!oflag) {
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strcpy(outfile, basename(path));
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strcat(outfile, ".h");
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}
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ret |= gen_h_header(pf, outfile);
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}
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if (gen_fnt) {
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if (!oflag) {
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strcpy(outfile, basename(path));
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strcat(outfile, ".fnt");
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}
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ret |= gen_fnt_file(pf, outfile);
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}
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free_font(pf);
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return ret;
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}
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int main(int ac, char **av)
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{
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int ret = 0;
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++av; --ac; /* skip av[0]*/
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getopts(&ac, &av); /* read command line options*/
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if (ac < 1 || (!gen_c && !gen_h && !gen_fnt)) {
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usage();
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exit(1);
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}
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if (oflag) {
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if (ac > 1 || (gen_c && gen_fnt) || (gen_c && gen_h) || (gen_h && gen_fnt)) {
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usage();
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exit(1);
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}
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}
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while (ac > 0) {
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ret |= convbdf(av[0]);
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++av; --ac;
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}
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exit(ret);
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}
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/* free font structure*/
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void free_font(struct font* pf)
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{
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if (!pf)
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return;
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if (pf->name)
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free(pf->name);
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if (pf->facename)
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free(pf->facename);
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if (pf->bits)
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free(pf->bits);
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if (pf->offset)
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free(pf->offset);
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if (pf->offrot)
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free(pf->offrot);
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if (pf->width)
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free(pf->width);
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free(pf);
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}
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/* build incore structure from .bdf file*/
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struct font* bdf_read_font(char *path)
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{
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FILE *fp;
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struct font* pf;
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fp = fopen(path, "rb");
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if (!fp) {
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fprintf(stderr, "Error opening file: %s\n", path);
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return NULL;
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}
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pf = (struct font*)calloc(1, sizeof(struct font));
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if (!pf)
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goto errout;
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pf->name = strdup(basename(path));
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if (!bdf_read_header(fp, pf)) {
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fprintf(stderr, "Error reading font header\n");
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goto errout;
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}
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if (!bdf_read_bitmaps(fp, pf)) {
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fprintf(stderr, "Error reading font bitmaps\n");
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goto errout;
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}
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fclose(fp);
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return pf;
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errout:
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fclose(fp);
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free_font(pf);
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return NULL;
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}
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/* read bdf font header information, return 0 on error*/
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int bdf_read_header(FILE *fp, struct font* pf)
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{
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int encoding;
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int nchars, maxwidth;
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int firstchar = 65535;
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int lastchar = -1;
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char buf[256];
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char facename[256];
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char copyright[256];
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/* set certain values to errors for later error checking*/
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pf->defaultchar = -1;
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pf->ascent = -1;
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pf->descent = -1;
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for (;;) {
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if (!bdf_getline(fp, buf, sizeof(buf))) {
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fprintf(stderr, "Error: EOF on file\n");
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return 0;
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}
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if (isprefix(buf, "FONT ")) { /* not required*/
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if (sscanf(buf, "FONT %[^\n]", facename) != 1) {
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fprintf(stderr, "Error: bad 'FONT'\n");
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return 0;
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}
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pf->facename = strdup(facename);
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continue;
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}
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if (isprefix(buf, "COPYRIGHT ")) { /* not required*/
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if (sscanf(buf, "COPYRIGHT \"%[^\"]", copyright) != 1) {
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fprintf(stderr, "Error: bad 'COPYRIGHT'\n");
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return 0;
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}
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pf->copyright = strdup(copyright);
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continue;
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}
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if (isprefix(buf, "DEFAULT_CHAR ")) { /* not required*/
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if (sscanf(buf, "DEFAULT_CHAR %d", &pf->defaultchar) != 1) {
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fprintf(stderr, "Error: bad 'DEFAULT_CHAR'\n");
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return 0;
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}
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}
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if (isprefix(buf, "FONT_DESCENT ")) {
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if (sscanf(buf, "FONT_DESCENT %d", &pf->descent) != 1) {
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fprintf(stderr, "Error: bad 'FONT_DESCENT'\n");
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return 0;
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}
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continue;
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}
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if (isprefix(buf, "FONT_ASCENT ")) {
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if (sscanf(buf, "FONT_ASCENT %d", &pf->ascent) != 1) {
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fprintf(stderr, "Error: bad 'FONT_ASCENT'\n");
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return 0;
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}
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continue;
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}
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if (isprefix(buf, "FONTBOUNDINGBOX ")) {
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if (sscanf(buf, "FONTBOUNDINGBOX %d %d %d %d",
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&pf->fbbw, &pf->fbbh, &pf->fbbx, &pf->fbby) != 4) {
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fprintf(stderr, "Error: bad 'FONTBOUNDINGBOX'\n");
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return 0;
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}
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continue;
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}
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if (isprefix(buf, "CHARS ")) {
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if (sscanf(buf, "CHARS %d", &nchars) != 1) {
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fprintf(stderr, "Error: bad 'CHARS'\n");
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return 0;
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}
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continue;
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}
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/*
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* Reading ENCODING is necessary to get firstchar/lastchar
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* which is needed to pre-calculate our offset and widths
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* array sizes.
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*/
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if (isprefix(buf, "ENCODING ")) {
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if (sscanf(buf, "ENCODING %d", &encoding) != 1) {
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fprintf(stderr, "Error: bad 'ENCODING'\n");
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return 0;
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}
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if (encoding >= 0 &&
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encoding <= limit_char &&
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encoding >= start_char) {
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if (firstchar > encoding)
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firstchar = encoding;
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if (lastchar < encoding)
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lastchar = encoding;
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}
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continue;
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}
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if (strequal(buf, "ENDFONT"))
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break;
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}
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|
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/* calc font height*/
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if (pf->ascent < 0 || pf->descent < 0 || firstchar < 0) {
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fprintf(stderr, "Error: Invalid BDF file, requires FONT_ASCENT/FONT_DESCENT/ENCODING\n");
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return 0;
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}
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pf->height = pf->ascent + pf->descent;
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|
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/* calc default char*/
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if (pf->defaultchar < 0 ||
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pf->defaultchar < firstchar ||
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pf->defaultchar > limit_char ||
|
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pf->defaultchar > lastchar)
|
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pf->defaultchar = firstchar;
|
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|
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/* calc font size (offset/width entries)*/
|
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pf->firstchar = firstchar;
|
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pf->size = lastchar - firstchar + 1;
|
|
|
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/* use the font boundingbox to get initial maxwidth*/
|
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/*maxwidth = pf->fbbw - pf->fbbx;*/
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maxwidth = pf->fbbw;
|
|
|
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/* initially use font maxwidth * height for bits allocation*/
|
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pf->bits_size = nchars * BITMAP_WORDS(maxwidth) * pf->height;
|
|
|
|
/* allocate bits, offset, and width arrays*/
|
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pf->bits = (bitmap_t *)malloc(pf->bits_size * sizeof(bitmap_t) + EXTRA);
|
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pf->offset = (unsigned int *)malloc(pf->size * sizeof(unsigned int));
|
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pf->offrot = (unsigned int *)malloc(pf->size * sizeof(unsigned int));
|
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pf->width = (unsigned char *)malloc(pf->size * sizeof(unsigned char));
|
|
|
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if (!pf->bits || !pf->offset || !pf->offrot || !pf->width) {
|
|
fprintf(stderr, "Error: no memory for font load\n");
|
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return 0;
|
|
}
|
|
|
|
fprintf(stderr, "Header parsed\n");
|
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return 1;
|
|
}
|
|
|
|
/* read bdf font bitmaps, return 0 on error*/
|
|
int bdf_read_bitmaps(FILE *fp, struct font* pf)
|
|
{
|
|
int ofs = 0;
|
|
int ofr = 0;
|
|
int maxwidth = 0;
|
|
int i, k, encoding, width;
|
|
int bbw, bbh, bbx, bby;
|
|
int proportional = 0;
|
|
int encodetable = 0;
|
|
int l;
|
|
char buf[256];
|
|
|
|
/* reset file pointer*/
|
|
fseek(fp, 0L, SEEK_SET);
|
|
|
|
/* initially mark offsets as not used*/
|
|
for (i=0; i<pf->size; ++i)
|
|
pf->offset[i] = -1;
|
|
|
|
for (;;) {
|
|
if (!bdf_getline(fp, buf, sizeof(buf))) {
|
|
fprintf(stderr, "Error: EOF on file\n");
|
|
return 0;
|
|
}
|
|
if (isprefix(buf, "STARTCHAR")) {
|
|
encoding = width = bbw = bbh = bbx = bby = -1;
|
|
continue;
|
|
}
|
|
if (isprefix(buf, "ENCODING ")) {
|
|
if (sscanf(buf, "ENCODING %d", &encoding) != 1) {
|
|
fprintf(stderr, "Error: bad 'ENCODING'\n");
|
|
return 0;
|
|
}
|
|
if (encoding < start_char || encoding > limit_char)
|
|
encoding = -1;
|
|
continue;
|
|
}
|
|
if (isprefix(buf, "DWIDTH ")) {
|
|
if (sscanf(buf, "DWIDTH %d", &width) != 1) {
|
|
fprintf(stderr, "Error: bad 'DWIDTH'\n");
|
|
return 0;
|
|
}
|
|
/* use font boundingbox width if DWIDTH <= 0*/
|
|
if (width <= 0)
|
|
width = pf->fbbw - pf->fbbx;
|
|
continue;
|
|
}
|
|
if (isprefix(buf, "BBX ")) {
|
|
if (sscanf(buf, "BBX %d %d %d %d", &bbw, &bbh, &bbx, &bby) != 4) {
|
|
fprintf(stderr, "Error: bad 'BBX'\n");
|
|
return 0;
|
|
}
|
|
continue;
|
|
}
|
|
if (strequal(buf, "BITMAP") || strequal(buf, "BITMAP ")) {
|
|
bitmap_t *ch_bitmap = pf->bits + ofs;
|
|
int ch_words;
|
|
|
|
if (encoding < 0)
|
|
continue;
|
|
|
|
/* set bits offset in encode map*/
|
|
if (pf->offset[encoding-pf->firstchar] != (unsigned int)-1) {
|
|
fprintf(stderr, "Error: duplicate encoding for character %d (0x%02x), ignoring duplicate\n",
|
|
encoding, encoding);
|
|
continue;
|
|
}
|
|
pf->offset[encoding-pf->firstchar] = ofs;
|
|
pf->offrot[encoding-pf->firstchar] = ofr;
|
|
|
|
/* calc char width*/
|
|
if (bbx < 0) {
|
|
width -= bbx;
|
|
/*if (width > maxwidth)
|
|
width = maxwidth;*/
|
|
bbx = 0;
|
|
}
|
|
if (width > maxwidth)
|
|
maxwidth = width;
|
|
pf->width[encoding-pf->firstchar] = width;
|
|
|
|
/* clear bitmap*/
|
|
memset(ch_bitmap, 0, BITMAP_BYTES(width) * pf->height);
|
|
|
|
ch_words = BITMAP_WORDS(width);
|
|
#define BM(row,col) (*(ch_bitmap + ((row)*ch_words) + (col)))
|
|
#define BITMAP_NIBBLES (BITMAP_BITSPERIMAGE/4)
|
|
|
|
/* read bitmaps*/
|
|
for (i=0; ; ++i) {
|
|
int hexnibbles;
|
|
|
|
if (!bdf_getline(fp, buf, sizeof(buf))) {
|
|
fprintf(stderr, "Error: EOF reading BITMAP data\n");
|
|
return 0;
|
|
}
|
|
if (isprefix(buf, "ENDCHAR"))
|
|
break;
|
|
|
|
hexnibbles = strlen(buf);
|
|
for (k=0; k<ch_words; ++k) {
|
|
int ndx = k * BITMAP_NIBBLES;
|
|
int padnibbles = hexnibbles - ndx;
|
|
bitmap_t value;
|
|
|
|
if (padnibbles <= 0)
|
|
break;
|
|
if (padnibbles >= BITMAP_NIBBLES)
|
|
padnibbles = 0;
|
|
|
|
value = bdf_hexval((unsigned char *)buf,
|
|
ndx, ndx+BITMAP_NIBBLES-1-padnibbles);
|
|
value <<= padnibbles * BITMAP_NIBBLES;
|
|
|
|
BM(pf->height - pf->descent - bby - bbh + i, k) |=
|
|
value >> bbx;
|
|
/* handle overflow into next image word*/
|
|
if (bbx) {
|
|
BM(pf->height - pf->descent - bby - bbh + i, k+1) =
|
|
value << (BITMAP_BITSPERIMAGE - bbx);
|
|
}
|
|
}
|
|
}
|
|
|
|
ofs += BITMAP_WORDS(width) * pf->height;
|
|
ofr += pf->width[encoding-pf->firstchar] * ((pf->height+7)/8);
|
|
|
|
continue;
|
|
}
|
|
if (strequal(buf, "ENDFONT"))
|
|
break;
|
|
}
|
|
|
|
/* set max width*/
|
|
pf->maxwidth = maxwidth;
|
|
|
|
/* change unused width values to default char values*/
|
|
for (i=0; i<pf->size; ++i) {
|
|
int defchar = pf->defaultchar - pf->firstchar;
|
|
|
|
if (pf->offset[i] == (unsigned int)-1)
|
|
pf->width[i] = pf->width[defchar];
|
|
}
|
|
|
|
/* determine whether font doesn't require encode table*/
|
|
#ifdef ROTATE
|
|
l = 0;
|
|
for (i=0; i<pf->size; ++i) {
|
|
if (pf->offrot[i] != l) {
|
|
encodetable = 1;
|
|
break;
|
|
}
|
|
l += pf->maxwidth * ((pf->height + 7) / 8);
|
|
}
|
|
#else
|
|
l = 0;
|
|
for (i=0; i<pf->size; ++i) {
|
|
if (pf->offset[i] != l) {
|
|
encodetable = 1;
|
|
break;
|
|
}
|
|
l += BITMAP_WORDS(pf->width[i]) * pf->height;
|
|
}
|
|
#endif
|
|
if (!encodetable) {
|
|
free(pf->offset);
|
|
pf->offset = NULL;
|
|
}
|
|
|
|
/* determine whether font is fixed-width*/
|
|
for (i=0; i<pf->size; ++i) {
|
|
if (pf->width[i] != maxwidth) {
|
|
proportional = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (!proportional) {
|
|
free(pf->width);
|
|
pf->width = NULL;
|
|
}
|
|
|
|
/* reallocate bits array to actual bits used*/
|
|
if (ofs < pf->bits_size) {
|
|
pf->bits = realloc(pf->bits, ofs * sizeof(bitmap_t));
|
|
pf->bits_size = ofs;
|
|
}
|
|
else {
|
|
if (ofs > pf->bits_size) {
|
|
fprintf(stderr, "Warning: DWIDTH spec > max FONTBOUNDINGBOX\n");
|
|
if (ofs > pf->bits_size+EXTRA) {
|
|
fprintf(stderr, "Error: Not enough bits initially allocated\n");
|
|
return 0;
|
|
}
|
|
pf->bits_size = ofs;
|
|
}
|
|
}
|
|
|
|
#ifdef ROTATE
|
|
pf->bits_size = ofr; /* always update, rotated is smaller */
|
|
#endif
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* read the next non-comment line, returns buf or NULL if EOF*/
|
|
char *bdf_getline(FILE *fp, char *buf, int len)
|
|
{
|
|
int c;
|
|
char *b;
|
|
|
|
for (;;) {
|
|
b = buf;
|
|
while ((c = getc(fp)) != EOF) {
|
|
if (c == '\r')
|
|
continue;
|
|
if (c == '\n')
|
|
break;
|
|
if (b - buf >= (len - 1))
|
|
break;
|
|
*b++ = c;
|
|
}
|
|
*b = '\0';
|
|
if (c == EOF && b == buf)
|
|
return NULL;
|
|
if (b != buf && !isprefix(buf, "COMMENT"))
|
|
break;
|
|
}
|
|
return buf;
|
|
}
|
|
|
|
/* return hex value of portion of buffer*/
|
|
bitmap_t bdf_hexval(unsigned char *buf, int ndx1, int ndx2)
|
|
{
|
|
bitmap_t val = 0;
|
|
int i, c;
|
|
|
|
for (i=ndx1; i<=ndx2; ++i) {
|
|
c = buf[i];
|
|
if (c >= '0' && c <= '9')
|
|
c -= '0';
|
|
else
|
|
if (c >= 'A' && c <= 'F')
|
|
c = c - 'A' + 10;
|
|
else
|
|
if (c >= 'a' && c <= 'f')
|
|
c = c - 'a' + 10;
|
|
else
|
|
c = 0;
|
|
val = (val << 4) | c;
|
|
}
|
|
return val;
|
|
}
|
|
|
|
/*
|
|
* Take an bitmap_t bitmap and convert to Rockbox format.
|
|
* Used for converting font glyphs for the time being.
|
|
* Can use for standard X11 and Win32 images as well.
|
|
* See format description in lcd-recorder.c
|
|
*
|
|
* Doing it this way keeps fonts in standard formats,
|
|
* as well as keeping Rockbox hw bitmap format.
|
|
*/
|
|
int rotleft(unsigned char *dst, /* output buffer */
|
|
size_t dstlen, /* buffer size */
|
|
bitmap_t *src, unsigned int width, unsigned int height)
|
|
{
|
|
unsigned int i,j;
|
|
unsigned int src_words; /* # words of input image*/
|
|
unsigned int dst_mask; /* bit mask for destination */
|
|
bitmap_t src_mask; /* bit mask for source */
|
|
|
|
/* calc words of input image*/
|
|
src_words = BITMAP_WORDS(width) * height;
|
|
|
|
if(((height + 7) / 8) * width > dstlen) {
|
|
fprintf(stderr, "%s:%d %d x %d overflows %d bytes buffer, needs %d\n",
|
|
__FILE__, __LINE__, width, height, dstlen,
|
|
((height + 7) / 8) * width );
|
|
return 0;
|
|
}
|
|
|
|
/* clear background*/
|
|
memset(dst, 0, ((height + 7) / 8) * width);
|
|
|
|
dst_mask = 1;
|
|
|
|
for (i=0; i < src_words; i++) {
|
|
|
|
/* calc src input bit*/
|
|
src_mask = 1 << (sizeof (bitmap_t) * 8 - 1);
|
|
|
|
/* for each input column...*/
|
|
for(j=0; j < width; j++) {
|
|
|
|
if (src_mask == 0) /* input word done? */
|
|
{
|
|
src_mask = 1 << (sizeof (bitmap_t) * 8 - 1);
|
|
i++; /* next input word */
|
|
}
|
|
|
|
/* if set in input, set in rotated output */
|
|
if (src[i] & src_mask)
|
|
dst[j] |= dst_mask;
|
|
|
|
src_mask >>= 1; /* next input bit */
|
|
}
|
|
|
|
dst_mask <<= 1; /* next output bit (row) */
|
|
if (dst_mask > (1 << 7)) /* output bit > 7? */
|
|
{
|
|
dst_mask = 1;
|
|
dst += width; /* next output byte row */
|
|
}
|
|
}
|
|
return ((height + 7) / 8) * width; /* return result size in bytes */
|
|
}
|
|
|
|
|
|
/* generate C source from in-core font*/
|
|
int gen_c_source(struct font* pf, char *path)
|
|
{
|
|
FILE *ofp;
|
|
int i, ofr = 0;
|
|
int did_syncmsg = 0;
|
|
time_t t = time(0);
|
|
bitmap_t *ofs = pf->bits;
|
|
char buf[256];
|
|
char obuf[256];
|
|
char hdr1[] = {
|
|
"/* Generated by convbdf on %s. */\n"
|
|
"#include \"font.h\"\n"
|
|
"#ifdef HAVE_LCD_BITMAP\n"
|
|
"\n"
|
|
"/* Font information:\n"
|
|
" name: %s\n"
|
|
" facename: %s\n"
|
|
" w x h: %dx%d\n"
|
|
" size: %d\n"
|
|
" ascent: %d\n"
|
|
" descent: %d\n"
|
|
" first char: %d (0x%02x)\n"
|
|
" last char: %d (0x%02x)\n"
|
|
" default char: %d (0x%02x)\n"
|
|
" proportional: %s\n"
|
|
" %s\n"
|
|
"*/\n"
|
|
"\n"
|
|
"/* Font character bitmap data. */\n"
|
|
"static const unsigned char _font_bits[] = {\n"
|
|
};
|
|
|
|
ofp = fopen(path, "w");
|
|
if (!ofp) {
|
|
fprintf(stderr, "Can't create %s\n", path);
|
|
return 1;
|
|
}
|
|
|
|
strcpy(buf, ctime(&t));
|
|
buf[strlen(buf)-1] = 0;
|
|
|
|
fprintf(ofp, hdr1, buf,
|
|
pf->name,
|
|
pf->facename? pf->facename: "",
|
|
pf->maxwidth, pf->height,
|
|
pf->size,
|
|
pf->ascent, pf->descent,
|
|
pf->firstchar, pf->firstchar,
|
|
pf->firstchar+pf->size-1, pf->firstchar+pf->size-1,
|
|
pf->defaultchar, pf->defaultchar,
|
|
pf->width? "yes": "no",
|
|
pf->copyright? pf->copyright: "");
|
|
|
|
/* generate bitmaps*/
|
|
for (i=0; i<pf->size; ++i) {
|
|
int x;
|
|
int bitcount = 0;
|
|
int width = pf->width ? pf->width[i] : pf->maxwidth;
|
|
int height = pf->height;
|
|
bitmap_t *bits;
|
|
bitmap_t bitvalue;
|
|
|
|
/* Skip missing glyphs */
|
|
if (pf->offset && (pf->offset[i] == (unsigned int)-1))
|
|
continue;
|
|
|
|
bits = pf->bits + (pf->offset? pf->offset[i]: (pf->height * i));
|
|
|
|
fprintf(ofp, "\n/* Character %d (0x%02x):\n width %d",
|
|
i+pf->firstchar, i+pf->firstchar, width);
|
|
|
|
if (gen_map) {
|
|
fprintf(ofp, "\n +");
|
|
for (x=0; x<width; ++x) fprintf(ofp, "-");
|
|
fprintf(ofp, "+\n");
|
|
|
|
x = 0;
|
|
while (height > 0) {
|
|
if (x == 0) fprintf(ofp, " |");
|
|
|
|
if (bitcount <= 0) {
|
|
bitcount = BITMAP_BITSPERIMAGE;
|
|
bitvalue = *bits++;
|
|
}
|
|
|
|
fprintf(ofp, BITMAP_TESTBIT(bitvalue)? "*": " ");
|
|
|
|
bitvalue = BITMAP_SHIFTBIT(bitvalue);
|
|
--bitcount;
|
|
if (++x == width) {
|
|
fprintf(ofp, "|\n");
|
|
--height;
|
|
x = 0;
|
|
bitcount = 0;
|
|
}
|
|
}
|
|
fprintf(ofp, " +");
|
|
for (x=0; x<width; ++x)
|
|
fprintf(ofp, "-");
|
|
fprintf(ofp, "+ */\n");
|
|
}
|
|
else
|
|
fprintf(ofp, " */\n");
|
|
|
|
bits = pf->bits + (pf->offset? pf->offset[i]: (pf->height * i));
|
|
#ifdef ROTATE /* pre-rotated into Rockbox bitmap format */
|
|
{
|
|
unsigned char bytemap[512];
|
|
int y8, ix=0;
|
|
|
|
int size = rotleft(bytemap, sizeof(bytemap), bits, width,
|
|
pf->height);
|
|
for (y8=0; y8<pf->height; y8+=8) /* column rows */
|
|
{
|
|
for (x=0; x<width; x++) {
|
|
fprintf(ofp, "0x%02x, ", bytemap[ix]);
|
|
ix++;
|
|
}
|
|
fprintf(ofp, "\n");
|
|
}
|
|
|
|
/* update offrot since bits are now in sorted order */
|
|
pf->offrot[i] = ofr;
|
|
ofr += size;
|
|
|
|
}
|
|
#else
|
|
for (x=BITMAP_WORDS(width)*pf->height; x>0; --x) {
|
|
fprintf(ofp, "0x%04x,\n", *bits);
|
|
if (!did_syncmsg && *bits++ != *ofs++) {
|
|
fprintf(stderr, "Warning: found encoding values in non-sorted order (not an error).\n");
|
|
did_syncmsg = 1;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
fprintf(ofp, "};\n\n");
|
|
|
|
if (pf->offset) {
|
|
/* output offset table*/
|
|
fprintf(ofp, "/* Character->glyph mapping. */\n"
|
|
"static const unsigned short _sysfont_offset[] = {\n");
|
|
|
|
for (i=0; i<pf->size; ++i) {
|
|
if (pf->offset[i] == (unsigned int)-1) {
|
|
pf->offset[i] = pf->offset[pf->defaultchar - pf->firstchar];
|
|
pf->offrot[i] = pf->offrot[pf->defaultchar - pf->firstchar];
|
|
}
|
|
fprintf(ofp, " %ld,\t/* (0x%02x) */\n",
|
|
#ifdef ROTATE
|
|
pf->offrot[i], i+pf->firstchar);
|
|
#else
|
|
pf->offset[i], i+pf->firstchar);
|
|
#endif
|
|
}
|
|
fprintf(ofp, "};\n\n");
|
|
}
|
|
|
|
/* output width table for proportional fonts*/
|
|
if (pf->width) {
|
|
fprintf(ofp, "/* Character width data. */\n"
|
|
"static const unsigned char _sysfont_width[] = {\n");
|
|
|
|
for (i=0; i<pf->size; ++i)
|
|
fprintf(ofp, " %d,\t/* (0x%02x) */\n",
|
|
pf->width[i], i+pf->firstchar);
|
|
fprintf(ofp, "};\n\n");
|
|
}
|
|
|
|
/* output struct font struct*/
|
|
if (pf->offset)
|
|
sprintf(obuf, "_sysfont_offset,");
|
|
else
|
|
sprintf(obuf, "0, /* no encode table */");
|
|
|
|
if (pf->width)
|
|
sprintf(buf, "_sysfont_width, /* width */");
|
|
else
|
|
sprintf(buf, "0, /* fixed width */");
|
|
|
|
fprintf(ofp, "/* Exported structure definition. */\n"
|
|
"const struct font sysfont = {\n"
|
|
" %d, /* maxwidth */\n"
|
|
" %d, /* height */\n"
|
|
" %d, /* ascent */\n"
|
|
" %d, /* firstchar */\n"
|
|
" %d, /* size */\n"
|
|
" _font_bits, /* bits */\n"
|
|
" %s /* offset */\n"
|
|
" %s\n"
|
|
" %d, /* defaultchar */\n"
|
|
" %d /* bits_size */\n"
|
|
"};\n"
|
|
"#endif /* HAVE_LCD_BITMAP */\n",
|
|
pf->maxwidth, pf->height,
|
|
pf->ascent,
|
|
pf->firstchar,
|
|
pf->size,
|
|
obuf,
|
|
buf,
|
|
pf->defaultchar,
|
|
pf->bits_size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* generate C header from in-core font*/
|
|
int gen_h_header(struct font* pf, char *path)
|
|
{
|
|
FILE *ofp;
|
|
time_t t = time(0);
|
|
char buf[256];
|
|
char hdr1[] = {
|
|
"/* Generated by convbdf on %s. */\n"
|
|
"#ifdef HAVE_LCD_BITMAP\n"
|
|
"\n"
|
|
"/* Font information*/\n"
|
|
"#define SYSFONT_NAME %s\n"
|
|
"#define SYSFONT_FACENAME %s\n"
|
|
"#define SYSFONT_WIDTH %d\n"
|
|
"#define SYSFONT_HEIGHT %d\n"
|
|
"#define SYSFONT_SIZE %d\n"
|
|
"#define SYSFONT_ASCENT %d\n"
|
|
"#define SYSFONT_DESCENT %d\n"
|
|
"#define SYSFONT_FIRST_CHAR %d\n"
|
|
"#define SYSFONT_LAST_CHAR %d\n"
|
|
"#define SYSFONT_DEFAULT_CHAR %d\n"
|
|
"#define SYSFONT_PROPORTIONAL %d\n"
|
|
"#define SYSFONT_COPYRIGHT %s\n"
|
|
"#define SYSFONT_BITS_SIZE %d\n"
|
|
"\n"
|
|
"#endif\n"
|
|
};
|
|
|
|
ofp = fopen(path, "w");
|
|
if (!ofp) {
|
|
fprintf(stderr, "Can't create %s\n", path);
|
|
return 1;
|
|
}
|
|
|
|
strcpy(buf, ctime(&t));
|
|
buf[strlen(buf)-1] = 0;
|
|
|
|
fprintf(ofp, hdr1, buf,
|
|
pf->name,
|
|
pf->facename? pf->facename: "",
|
|
pf->maxwidth,
|
|
pf->height,
|
|
pf->size,
|
|
pf->ascent,
|
|
pf->descent,
|
|
pf->firstchar,
|
|
pf->firstchar+pf->size-1,
|
|
pf->defaultchar,
|
|
pf->width? 1: 0,
|
|
pf->copyright? pf->copyright: "",
|
|
pf->bits_size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int writebyte(FILE *fp, unsigned char c)
|
|
{
|
|
return putc(c, fp) != EOF;
|
|
}
|
|
|
|
static int writeshort(FILE *fp, unsigned short s)
|
|
{
|
|
putc(s, fp);
|
|
return putc(s>>8, fp) != EOF;
|
|
}
|
|
|
|
static int writeint(FILE *fp, unsigned int l)
|
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{
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putc(l, fp);
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putc(l>>8, fp);
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putc(l>>16, fp);
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return putc(l>>24, fp) != EOF;
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}
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|
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static int writestr(FILE *fp, char *str, int count)
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{
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return fwrite(str, 1, count, fp) == count;
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}
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|
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static int writestrpad(FILE *fp, char *str, int totlen)
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|
{
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int ret;
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|
|
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while (str && *str && totlen > 0) {
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if (*str) {
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ret = putc(*str++, fp);
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--totlen;
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}
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}
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while (--totlen >= 0)
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ret = putc(' ', fp);
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return ret;
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|
}
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|
|
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/* generate .fnt format file from in-core font*/
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int gen_fnt_file(struct font* pf, char *path)
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|
{
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FILE *ofp;
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int i;
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#ifdef ROTATE
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int ofr = 0;
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#endif
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|
|
|
ofp = fopen(path, "wb");
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|
if (!ofp) {
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fprintf(stderr, "Can't create %s\n", path);
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|
return 1;
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|
}
|
|
|
|
/* write magic and version #*/
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|
writestr(ofp, VERSION, 4);
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|
#ifndef ROTATE
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|
/* internal font name*/
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|
writestrpad(ofp, pf->name, 64);
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|
|
|
/* copyright*/
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|
writestrpad(ofp, pf->copyright, 256);
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|
#endif
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|
/* font info*/
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|
writeshort(ofp, pf->maxwidth);
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|
writeshort(ofp, pf->height);
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|
writeshort(ofp, pf->ascent);
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|
writeshort(ofp, 0);
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|
writeint(ofp, pf->firstchar);
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|
writeint(ofp, pf->defaultchar);
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|
writeint(ofp, pf->size);
|
|
|
|
/* variable font data sizes*/
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|
writeint(ofp, pf->bits_size); /* # words of bitmap_t*/
|
|
writeint(ofp, pf->offset? pf->size: 0); /* # ints of offset*/
|
|
writeint(ofp, pf->width? pf->size: 0); /* # bytes of width*/
|
|
/* variable font data*/
|
|
#ifdef ROTATE
|
|
for (i=0; i<pf->size; ++i)
|
|
{
|
|
bitmap_t* bits;
|
|
int width = pf->width ? pf->width[i] : pf->maxwidth;
|
|
int size;
|
|
unsigned char bytemap[512];
|
|
|
|
/* Skip missing glyphs */
|
|
if (pf->offset && (pf->offset[i] == (unsigned int)-1))
|
|
continue;
|
|
|
|
bits = pf->bits + (pf->offset? pf->offset[i]: (pf->height * i));
|
|
|
|
size = rotleft(bytemap, sizeof(bytemap), bits, width, pf->height);
|
|
writestr(ofp, (char *)bytemap, size);
|
|
|
|
/* update offrot since bits are now in sorted order */
|
|
pf->offrot[i] = ofr;
|
|
ofr += size;
|
|
}
|
|
|
|
if ( pf->bits_size < 0xFFDB )
|
|
{
|
|
/* bitmap offset is small enough, use unsigned short for offset */
|
|
if (ftell(ofp) & 1)
|
|
writebyte(ofp, 0); /* pad to 16-bit boundary*/
|
|
}
|
|
else
|
|
{
|
|
/* bitmap offset is large then 64K, use unsigned int for offset */
|
|
while (ftell(ofp) & 3)
|
|
writebyte(ofp, 0); /* pad to 32-bit boundary*/
|
|
}
|
|
|
|
if (pf->offset)
|
|
{
|
|
for (i=0; i<pf->size; ++i)
|
|
{
|
|
if (pf->offset[i] == (unsigned int)-1) {
|
|
pf->offrot[i] = pf->offrot[pf->defaultchar - pf->firstchar];
|
|
}
|
|
if ( pf->bits_size < 0xFFDB )
|
|
writeshort(ofp, pf->offrot[i]);
|
|
else
|
|
writeint(ofp, pf->offrot[i]);
|
|
}
|
|
}
|
|
|
|
if (pf->width)
|
|
for (i=0; i<pf->size; ++i)
|
|
writebyte(ofp, pf->width[i]);
|
|
#else
|
|
for (i=0; i<pf->bits_size; ++i)
|
|
writeshort(ofp, pf->bits[i]);
|
|
if (ftell(ofp) & 2)
|
|
writeshort(ofp, 0); /* pad to 32-bit boundary*/
|
|
|
|
if (pf->offset)
|
|
for (i=0; i<pf->size; ++i) {
|
|
if (pf->offset[i] == (unsigned int)-1) {
|
|
pf->offset[i] = pf->offset[pf->defaultchar - pf->firstchar];
|
|
}
|
|
writeint(ofp, pf->offset[i]);
|
|
}
|
|
|
|
if (pf->width)
|
|
for (i=0; i<pf->size; ++i)
|
|
writebyte(ofp, pf->width[i]);
|
|
#endif
|
|
fclose(ofp);
|
|
return 0;
|
|
}
|