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-rw-r--r--nuttx/tools/bdf-converter.c676
1 files changed, 0 insertions, 676 deletions
diff --git a/nuttx/tools/bdf-converter.c b/nuttx/tools/bdf-converter.c
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--- a/nuttx/tools/bdf-converter.c
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-/****************************************************************************
- * 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.
- *
- */
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdbool.h>
-#include <string.h>
-#include <ctype.h>
-
-/****************************************************************************
- * Pre-Processor Definitions
- ****************************************************************************/
-
-/*
-#define VERBOSE
-#define DBG
-*/
-
-// 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 dw_x0; /* Width in x of the vector indicating
- * the position of the next glyph's origin
- * relative to the origin of this glyph */
- int dw_y0; /* Width in y of the vector indicating
- * the position of the next glyph's origin
- * relative to the origin of this glyph */
- 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 */
- uint64_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 : 3; /* 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 : 5;
-} 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
- *
- ****************************************************************************/
-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_printglyphinfo
- *
- * 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("DW_X0 = %d\n", ginfo->dw_x0);
- printf("DW_Y0 = %d\n", ginfo->dw_y0);
- 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]);
- }
-}
-#endif /* DBG */
-
-/****************************************************************************
- * 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);
-}
-#endif /* DBG */
-
-/****************************************************************************
- * Name: bdf_getglyphinfo
- *
- * Description:
- * Obtains the information for an individual glyph. The BDF properties
- * taken into account are:
- * - ENCODING
- * - DWIDTH
- * - BBX
- * BDF properties ignored:
- * - SWIDTH
- * - 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.
- *
- ****************************************************************************/
-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);
- }
-
- /* DWIDTH information */
-
- if(strcmp(token, "DWIDTH") == 0)
- {
- token = (char *)strtok_r(NULL, " ", &saveptr1);
- ginfo->dw_x0 = atoi(token);
- token = (char *)strtok_r(NULL, " ", &saveptr1);
- ginfo->dw_y0 = 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.
- *
- ****************************************************************************/
-static void bdf_getglyphbitmap(FILE *file, glyphinfo_t *ginfo)
-{
- char line[BDF_MAX_LINE_LENGTH];
- uint64_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.
- *
- ****************************************************************************/
-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 */
-
- if (ginfo->bb_x_off < 0)
- {
- fprintf(out,
- "/* %s (%d) -- NOTE: Xoffset should be %d, not 0. */\n",
- ginfo->name,
- ginfo->encoding,
- ginfo->bb_x_off);
- }
- else
- {
- 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, j;
- for (i = 0; i < ginfo->bb_h - 1; i++)
- {
- for (j = 1; j <= nxmetric->stride; j++)
- {
- int nxbyteoffset;
- uint8_t nxbyte = 0;
- uint64_t tempbitmap = ginfo->bitmap[i];
-
- /* Get the next byte */
-
- nxbyteoffset = (nxmetric->stride - j) * 8;
- nxbyte = (uint8_t)(tempbitmap >> nxbyteoffset);
- fprintf(out, "0x%x, ", nxbyte);
- }
- }
-
- /* Different behavior for the last bitmap */
-
- for (j = 1; j <= nxmetric->stride; j++)
- {
- int nxbyteoffset;
- uint8_t nxbyte = 0;
- uint64_t tempbitmap = ginfo->bitmap[i];
-
- /* Get the next byte */
-
- nxbyteoffset = (nxmetric->stride - j) * 8;
- nxbyte = (uint8_t)(tempbitmap >> nxbyteoffset);
-
- if (j == nxmetric->stride)
- {
- fprintf(out, "0x%x}\n", nxbyte);
- }
- else
- {
- fprintf(out, "0x%x, ", nxbyte);
- }
- }
-
- 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;
- char *input, *output;
-
- /* 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");
-
- if (file == NULL)
- {
- printf("%s: error opening file %s\n", argv[0], input);
- exit(0);
- }
- else
- {
-#ifdef VERBOSE
- printf("Opening \"%s\"\n", input);
-#endif /* VERBOSE */
- }
-
- /* Output file */
- if (argv[2])
- {
- output = argv[2];
- }
- else
- {
- output = "nxfonts_myfont.h";
- }
-
- 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)
- {
-
-#ifdef DBG
- printf("--\n");
-#endif /* DBG */
-
- // 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
- * DWIDTH
- * BBX
- */
- ginfo.encoding = 0;
- ginfo.dw_x0 = 0;
- ginfo.dw_y0 = 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(uint64_t) * ginfo.bb_h);
- bdf_getglyphbitmap(file, &ginfo);
-
-#ifdef DBG
- bdf_printglyphinfo(&ginfo);
-#endif /* DBG */
-
- /* 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;
-
- /* The NuttX font format does not support
- * negative X offsets. */
-
- if (ginfo.bb_x_off < 0)
- {
- nxmetric.xoffset = 0;
- printf("%s: ignoring negative x offset for "
- "glyph '%s' (%d)\n",
- argv[0],
- ginfo.name,
- ginfo.encoding);
- }
- else
- {
- nxmetric.xoffset = ginfo.bb_x_off;
- }
-
- nxmetric.yoffset = fbb_y + fbb_y_off -
- ginfo.bb_y_off - ginfo.bb_h;
-
-
-#ifdef DBG
- bdf_printnxmetricinfo(&nxmetric);
-#endif /* DBG */
-
- /* The space (32) character is treated differently */
-
- if (ginfo.encoding == 32)
- {
- fprintf(out, "/* The width of a space */\n\n");
- fprintf(out, "#define NXFONT_SPACEWIDTH %d\n\n", ginfo.dw_x0);
- }
- else
- {
- bdf_printoutput(out, &ginfo, &nxmetric);
- }
-
- /* Free memory */
-
- free(ginfo.bitmap);
-
- }
-
- str = NULL;
- }
-
- }
- fclose(file);
- fclose(out);
-
- /* The End */
-
- printf("Generated \"%s\"\n", output);
-
- }
-
- return EXIT_SUCCESS;
-}
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