Newer
Older
/****************************************************************************
* tools/bdf-converter.c
*
* Copyright (C) 2011 NX Engineering, S.A., All rights reserved.
* Author: Jose Pablo Carballo Gomez <jcarballo@nx-engineering.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/*
* Based one the "Glyph Bitmap Distribution Format (BDF) Specification",
* Version 2.2, by Adobe Systems Incorporated.
*
*/
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
/****************************************************************************
* Included Files
****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <ctype.h>
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
// BDF Specification Version 2.2:
// This version lifts the restriction on line length. In this version, the new
// maximum length of a value of the type string is 65535 characters, and hence
// lines may now be at least this long.
#define BDF_MAX_LINE_LENGTH 65535
/* Ranges of 7-bit and 8-bit fonts */
#define NXFONT_MIN7BIT 33
#define NXFONT_MAX7BIT 126
#define NXFONT_MIN8BIT 161
#define NXFONT_MAX8BIT 255
/****************************************************************************
* Public Types
****************************************************************************/
/* This structure holds information about a glyph */
typedef struct glyphinfo_s
{
char *name; /* Name for they glyph */
int encoding; /* The Adobe Standard Encoding value */
int bb_w; /* The width of the black pixels in x */
int bb_h; /* The height of the black pixels in y */
int bb_x_off; /* X displacement of the lower left corner
* of the bitmap from origin 0 */
int bb_y_off; /* Y displacement of the lower left corner
* of the bitmap from origin 0 */
uint32_t *bitmap; /* Hexadecimal data for the character bitmap */
} glyphinfo_t;
/* This structures provides the metrics for one glyph */
typedef struct nx_fontmetric_s
{
uint32_t stride : 2; /* Width of one font row in bytes */
uint32_t width : 6; /* Width of the font in bits */
uint32_t height : 6; /* Height of the font in rows */
uint32_t xoffset : 6; /* Top, left-hand corner X-offset in pixels */
uint32_t yoffset : 6; /* Top, left-hand corner y-offset in pixels */
uint32_t unused : 6;
} nx_fontmetric_t;
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: trimLine
*
* Description:
* Trims the line removing space characters at the front and at the end
* of the line.
*
* Input Parameters:
* line - The line to trim
*
****************************************************************************/
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
static void trimLine(char *line)
{
char *str;
str = line;
char *strEnd;
for (strEnd = str + strlen(str) - 1;
strEnd >= str && isspace((int)(*strEnd));
strEnd--);
*(strEnd + 1) = 0;
}
/****************************************************************************
* Name: bdf_parseIntLine
*
* Description:
* Parses a line containing a BDF property followed by integers. It will
* ignore the first token that corresponds to the property name.
*
* Input Parameters:
* line - A line with a BDF property followed by integers, i.e.:
* "FONTBOUNDINGBOX 8 13 0 -2"
* count - How many integers are specified by the BDF property. In the
* example above, count = 4.
* info - A pointer to memory provided by the caller in which to
* return the array of integers. For the example above:
* info[0] = 8
* info[1] = 13
* info[2] = 0
* info[3] = -2
*
****************************************************************************/
static void bdf_parseintline(char *line, unsigned int count, int *info)
{
char *str, *token, *saveptr1;
str = line;
/* Ignore the key */
token = (char *)strtok_r(str, " ", &saveptr1);
while ((token = (char *)strtok_r(NULL, " ", &saveptr1)) && count--)
{
*(info++) = atoi(token);
}
}
/****************************************************************************
* Name: bdf_printflyphinfo
*
* Description:
* Prints the information available for a glyph.
*
* Input Parameters:
* ginfo - A glyphinfo_t struct with the glyph's information.
*
****************************************************************************/
#ifdef DBG
static void bdf_printglyphinfo(const glyphinfo_t *ginfo)
{
printf("NAME = %s\n", ginfo->name);
printf("ENCODING = %d\n", ginfo->encoding);
printf("BB_W = %d\n", ginfo->bb_w);
printf("BB_H = %d\n", ginfo->bb_h);
printf("BB_X_OFF = %d\n", ginfo->bb_x_off);
printf("BB_Y_OFF = %d\n", ginfo->bb_y_off);
int i;
for (i = 0; i < ginfo->bb_h; i++)
{
printf("BITMAP[%d] = %x\n", i, ginfo->bitmap[i]);
}
}
/****************************************************************************
* Name: bdf_printnxmetricinfo
*
* Description:
* Prints the information available for a glyph's metric in the NX
* graphics system.
*
* Input Parameters:
* info - A nx_fontmetric_t struct with the glyph's information.
*
****************************************************************************/
#ifdef DBG
static void bdf_printnxmetricinfo(const nx_fontmetric_t *info)
{
printf("STRIDE = %d\n", info->stride);
printf("WIDTH = %d\n", info->width);
printf("HEIGHT = %d\n", info->height);
printf("XOFFSET = %d\n", info->xoffset);
printf("YOFFSET = %d\n", info->yoffset);
}
/****************************************************************************
* Name: bdf_getglyphinfo
*
* Description:
* Obtains the information for an individual glyph. The BDF properties
* taken into account are:
* - ENCODING
* - BBX
* BDF properties ignored:
* - SWIDTH
* - DWIDTH
* - SWIDTH1
* - DWIDTH1
* - VVECTOR
*
* Input Parameters:
* file - The input file stream pointing to the first line of the
* glyph's information (right after STARTCHAR).
* ginfo - A glyphinfo_t struct to fill with the glyph's information.
*
****************************************************************************/
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
static void bdf_getglyphinfo(FILE *file, glyphinfo_t *ginfo)
{
char line[BDF_MAX_LINE_LENGTH];
char lineCopy[BDF_MAX_LINE_LENGTH];
char *str, *token, *saveptr1;
bool done;
done = false;
while(fgets(line, BDF_MAX_LINE_LENGTH, file) != NULL && !done)
{
trimLine(line);
strcpy(lineCopy, line);
str = line;
while ((token = (char *)strtok_r(str, " ", &saveptr1)))
{
/* ENCODING information */
if(strcmp(token, "ENCODING") == 0)
{
token = (char *)strtok_r(NULL, " ", &saveptr1);
ginfo->encoding = atoi(token);
}
/* BBX information */
else if(strcmp(token, "BBX") == 0)
{
int bbxinfo[4];
bdf_parseintline(lineCopy, 4, bbxinfo);
ginfo->bb_w = bbxinfo[0];
ginfo->bb_h = bbxinfo[1];
ginfo->bb_x_off = bbxinfo[2];
ginfo->bb_y_off = bbxinfo[3];
/* This is the last BDF property of interest*/
done = true;
}
str = NULL;
}
}
}
/****************************************************************************
* Name: bdf_getglyphbitmap
*
* Description:
* Obtains the character bitmap information for an individual glyph.
*
* Input Parameters:
* file - The input file stream pointing to the first line of the
* glyph's bitmap (right after BITMAP).
* ginfo - A glyphinfo_t struct to fill with the glyph's bitmap.
*
****************************************************************************/
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
static void bdf_getglyphbitmap(FILE *file, glyphinfo_t *ginfo)
{
char line[BDF_MAX_LINE_LENGTH];
uint32_t *bitmap;
bool readingbitmap;
bitmap = ginfo->bitmap;
readingbitmap = true;
while (readingbitmap)
{
if (fgets(line, BDF_MAX_LINE_LENGTH, file) != NULL)
{
trimLine(line);
if(strcmp(line, "ENDCHAR") == 0)
{
readingbitmap = false;
}
else
{
char *endptr;
*bitmap = strtoul(line, &endptr, 16);
bitmap++;
}
}
else
{
/* error condition */
readingbitmap = false;
}
}
}
/****************************************************************************
* Name: bdf_getstride
*
* Description:
* Obtains the stride for an individual glyph. The stride is the width
* of one glyph's bitmap row in bytes.
*
* Input Parameters:
* ginfo - A glyphinfo_t struct with the glyph's information.
* stride - A pointer to memory provided by the caller in which to
* return the stride.
*
****************************************************************************/
static void bdf_getstride(glyphinfo_t *ginfo, uint32_t *stride)
{
*stride = (ginfo->bb_w % 8 == 0) ? ginfo->bb_w / 8 : ginfo->bb_w / 8 + 1;
/****************************************************************************
* Name: bdf_printoutput
*
* Description:
* Prints to the output stream the information of an individual glyph in
* the NuttX font format.
*
* Input Parameters:
* out - The output stream.
* ginfo - A glyphinfo_t struct with the glyph's information.
* nxmetric - A nx_fontmetric_t struct with the glyph's information.
*
****************************************************************************/
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
static void bdf_printoutput(FILE *out,
glyphinfo_t *ginfo,
nx_fontmetric_t *nxmetric)
{
/* Only interested in the 7 and 8 bit ranges */
if ((ginfo->encoding >= NXFONT_MIN7BIT &&
ginfo->encoding <= NXFONT_MAX7BIT) ||
(ginfo->encoding >= NXFONT_MIN8BIT &&
ginfo->encoding <= NXFONT_MAX8BIT))
{
/* Glyph general info */
fprintf(out, "/* %s (%d) */\n", ginfo->name, ginfo->encoding);
/* Glyph metrics */
fprintf(out,
"#define NXFONT_METRICS_%d {%d, %d, %d, %d, %d, 0}\n",
ginfo->encoding,
nxmetric->stride,
nxmetric->width,
nxmetric->height,
nxmetric->xoffset,
nxmetric->yoffset);
/* Glyph bitmap */
fprintf(out, "#define NXFONT_BITMAP_%d {", ginfo->encoding);
int i;
for (i = 0; i < ginfo->bb_h - 1; i++)
{
fprintf(out, "0x%x, ", ginfo->bitmap[i]);
}
fprintf(out, "0x%x}\n", ginfo->bitmap[i]);
fprintf(out, "\n");
}
}
/****************************************************************************
* Main
****************************************************************************/
int main(int argc, char **argv)
{
FILE *file, *out;
char line[BDF_MAX_LINE_LENGTH];
char lineCopy[BDF_MAX_LINE_LENGTH];
char *str, *token, *saveptr1;
/* FONTBOUNDINGBOX properties*/
int fbb_x = 0;
int fbb_y = 0;
int fbb_x_off = 0;
int fbb_y_off = 0;
/* Input BDF file */
input = argv[1];
if (input == NULL)
{
printf("%s: no input file\n", argv[0]);
exit(0);
}
file = fopen(input, "r");
printf("%s: error opening file %s\n", argv[0], input);
exit(0);
}
else
{
#ifdef VERBOSE
printf("Opening \"%s\"\n", input);
#endif /* VERBOSE */
}
/* Output file */
output = "out.txt";
out = fopen(output, "w");
if (out == NULL)
{
printf("%s: error opening file %s\n", argv[0], output);
fclose(file);
exit(0);
}
else
{
while (fgets(line, BDF_MAX_LINE_LENGTH, file) != NULL)
{
// Save a copy of the line
strcpy(lineCopy,line);
// Clean it
trimLine(line);
str = line;
while ((token = (char *)strtok_r(str, " ", &saveptr1)))
{
/* FONTBOUNDINGBOX - Global font information */
if (strcmp(token, "FONTBOUNDINGBOX") == 0)
{
int fbbinfo[4];
bdf_parseintline(lineCopy, 4, fbbinfo);
fbb_x = fbbinfo[0];
fbb_y = fbbinfo[1];
fbb_x_off = fbbinfo[2];
fbb_y_off = fbbinfo[3];
/* Print FONTBOUNDINGBOX information */
fprintf(out, "/* Maximum height and width of any");
fprintf(out, " glyph in the set */\n\n");
fprintf(out, "#define NXFONT_MAXHEIGHT %d\n", fbb_y);
fprintf(out, "#define NXFONT_MAXWIDTH %d\n\n", fbb_x);
}
/* STARTCHAR - Individual glyph information */
if (strcmp(token, "STARTCHAR") == 0)
{
glyphinfo_t ginfo;
/* Glyph name */
ginfo.name = (char *)strtok_r(NULL, " ", &saveptr1);
#ifdef VERBOSE
printf("Processing glyph: %s\n", ginfo.name);
#endif /* VERBOSE */
/* Glyph information:
* ENCODING
* BBX
*/
ginfo.encoding = 0;
ginfo.bb_w = 0;
ginfo.bb_h = 0;
ginfo.bb_x_off = 0;
ginfo.bb_y_off = 0;
bdf_getglyphinfo(file, &ginfo);
/* Glyph bitmap */
ginfo.bitmap = malloc(sizeof(uint32_t) * ginfo.bb_h);
bdf_getglyphbitmap(file, &ginfo);
/* Convert to nxfonts */
nx_fontmetric_t nxmetric;
uint32_t stride;
bdf_getstride(&ginfo, &stride);
nxmetric.stride = stride;
nxmetric.width = ginfo.bb_w;
nxmetric.height = ginfo.bb_h;
nxmetric.xoffset = (-fbb_x_off) + ginfo.bb_x_off;
nxmetric.yoffset = fbb_y + fbb_y_off - ginfo.bb_y_off;
bdf_printoutput(out, &ginfo, &nxmetric);
/* Free memory */
free(ginfo.bitmap);
}
str = NULL;
}
}
fclose(file);
fclose(out);
/* The End */
printf("Generated \"%s\"\n", output);