f00569816f
1. No .c file should include a "Public Types" section. Only a header file can define a public type. A .c file can only define a private type. Several files contained private type definitions. The section that they were defined in, however, was incorrectly named "Public Types." Those were easilty changed to "Private Types" which is what they are. 2. No .c file should include a "Public Function Prototypes" section. All global function prototypes should be provided via a header file and never declared with a .c file. For No. 2, I corrected as many cases as was reasonable for the time that I had available. But there are still a dozen or so .c files that declare "Public Function Prototypes" within a .c file. This is bad programming style. These declarations should all be moved to the proper header files.
759 lines
21 KiB
C
759 lines
21 KiB
C
/****************************************************************************
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* tools/bdf-converter.c
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*
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* Copyright (C) 2011 NX Engineering, S.A., All rights reserved.
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* Author: Jose Pablo Carballo Gomez <jcarballo@nx-engineering.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/*
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* Based one the "Glyph Bitmap Distribution Format (BDF) Specification",
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* Version 2.2, by Adobe Systems Incorporated.
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*
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*/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <string.h>
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#include <ctype.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#if 0
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# define VERBOSE
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# define DBG
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#endif
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/* BDF Specification Version 2.2:
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* This version lifts the restriction on line length. In this version, the new
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* maximum length of a value of the type string is 65535 characters, and hence
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* lines may now be at least this long.
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*/
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#define BDF_MAX_LINE_LENGTH 65535
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/* Ranges of 7-bit and 8-bit fonts */
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#define NXFONT_MIN7BIT 33
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#define NXFONT_MAX7BIT 126
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#define NXFONT_MIN8BIT 161
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#define NXFONT_MAX8BIT 255
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/* This structure holds information about a glyph */
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typedef struct glyphinfo_s
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{
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char *name; /* Name for they glyph */
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int encoding; /* The Adobe Standard Encoding value */
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int dw_x0; /* Width in x of the vector indicating
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* the position of the next glyph's origin
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* relative to the origin of this glyph */
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int dw_y0; /* Width in y of the vector indicating
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* the position of the next glyph's origin
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* relative to the origin of this glyph */
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int bb_w; /* The width of the black pixels in x */
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int bb_h; /* The height of the black pixels in y */
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int bb_x_off; /* X displacement of the lower left corner
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* of the bitmap from origin 0 */
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int bb_y_off; /* Y displacement of the lower left corner
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* of the bitmap from origin 0 */
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uint64_t *bitmap; /* Hexadecimal data for the character bitmap */
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} glyphinfo_t;
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/* This structures provides the metrics for one glyph */
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typedef struct nx_fontmetric_s
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{
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uint32_t stride : 3; /* Width of one font row in bytes */
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uint32_t width : 6; /* Width of the font in bits */
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uint32_t height : 6; /* Height of the font in rows */
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uint32_t xoffset : 6; /* Top, left-hand corner X-offset in pixels */
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uint32_t yoffset : 6; /* Top, left-hand corner y-offset in pixels */
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uint32_t unused : 5;
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} nx_fontmetric_t;
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: MY_strtok_r
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*
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* Description:
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* MinGW does not seem to provide strtok_r
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*
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****************************************************************************/
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#ifndef HAVE_STRTOK_R
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static char *MY_strtok_r(char *str, const char *delim, char **saveptr)
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{
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char *pbegin;
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char *pend = NULL;
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/* Decide if we are starting a new string or continuing from
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* the point we left off.
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*/
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if (str)
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{
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pbegin = str;
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}
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else if (saveptr && *saveptr)
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{
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pbegin = *saveptr;
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}
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else
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{
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return NULL;
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}
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/* Find the beginning of the next token */
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for (;
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*pbegin && strchr(delim, *pbegin) != NULL;
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pbegin++);
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/* If we are at the end of the string with nothing
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* but delimiters found, then return NULL.
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*/
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if (!*pbegin)
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{
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return NULL;
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}
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/* Find the end of the token */
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for (pend = pbegin + 1;
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*pend && strchr(delim, *pend) == NULL;
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pend++);
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/* pend either points to the end of the string or to
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* the first delimiter after the string.
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*/
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if (*pend)
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{
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/* Turn the delimiter into a null terminator */
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*pend++ = '\0';
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}
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/* Save the pointer where we left off and return the
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* beginning of the token.
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*/
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if (saveptr)
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{
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*saveptr = pend;
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}
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return pbegin;
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}
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#undef strtok_r
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#define strtok_r MY_strtok_r
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#endif
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/****************************************************************************
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* Name: trimLine
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*
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* Description:
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* Trims the line removing space characters at the front and at the end
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* of the line.
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*
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* Input Parameters:
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* line - The line to trim
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*
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****************************************************************************/
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static void trimLine(char *line)
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{
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char *str;
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str = line;
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char *strEnd;
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for (strEnd = str + strlen(str) - 1;
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strEnd >= str && isspace((int)(*strEnd));
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strEnd--);
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*(strEnd + 1) = 0;
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}
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/****************************************************************************
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* Name: bdf_parseIntLine
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*
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* Description:
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* Parses a line containing a BDF property followed by integers. It will
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* ignore the first token that corresponds to the property name.
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*
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* Input Parameters:
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* line - A line with a BDF property followed by integers, i.e.:
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* "FONTBOUNDINGBOX 8 13 0 -2"
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* count - How many integers are specified by the BDF property. In the
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* example above, count = 4.
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* info - A pointer to memory provided by the caller in which to
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* return the array of integers. For the example above:
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* info[0] = 8
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* info[1] = 13
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* info[2] = 0
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* info[3] = -2
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*
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****************************************************************************/
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static void bdf_parseintline(char *line, unsigned int count, int *info)
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{
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char *str, *token, *saveptr1;
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str = line;
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/* Ignore the key */
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token = (char *)strtok_r(str, " ", &saveptr1);
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while ((token = (char *)strtok_r(NULL, " ", &saveptr1)) && count--)
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{
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*(info++) = atoi(token);
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}
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}
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/****************************************************************************
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* Name: bdf_printglyphinfo
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*
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* Description:
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* Prints the information available for a glyph.
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*
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* Input Parameters:
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* ginfo - A glyphinfo_t struct with the glyph's information.
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*
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****************************************************************************/
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#ifdef DBG
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static void bdf_printglyphinfo(const glyphinfo_t *ginfo)
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{
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printf("NAME = %s\n", ginfo->name);
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printf("ENCODING = %d\n", ginfo->encoding);
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printf("DW_X0 = %d\n", ginfo->dw_x0);
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printf("DW_Y0 = %d\n", ginfo->dw_y0);
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printf("BB_W = %d\n", ginfo->bb_w);
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printf("BB_H = %d\n", ginfo->bb_h);
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printf("BB_X_OFF = %d\n", ginfo->bb_x_off);
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printf("BB_Y_OFF = %d\n", ginfo->bb_y_off);
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int i;
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for (i = 0; i < ginfo->bb_h; i++)
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{
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printf("BITMAP[%d] = %x\n", i, ginfo->bitmap[i]);
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}
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}
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#endif /* DBG */
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/****************************************************************************
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* Name: bdf_printnxmetricinfo
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*
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* Description:
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* Prints the information available for a glyph's metric in the NX
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* graphics system.
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*
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* Input Parameters:
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* info - A nx_fontmetric_t struct with the glyph's information.
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*
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****************************************************************************/
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#ifdef DBG
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static void bdf_printnxmetricinfo(const nx_fontmetric_t *info)
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{
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printf("STRIDE = %d\n", info->stride);
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printf("WIDTH = %d\n", info->width);
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printf("HEIGHT = %d\n", info->height);
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printf("XOFFSET = %d\n", info->xoffset);
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printf("YOFFSET = %d\n", info->yoffset);
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}
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#endif /* DBG */
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/****************************************************************************
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* Name: bdf_getglyphinfo
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*
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* Description:
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* Obtains the information for an individual glyph. The BDF properties
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* taken into account are:
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* - ENCODING
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* - DWIDTH
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* - BBX
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* BDF properties ignored:
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* - SWIDTH
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* - SWIDTH1
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* - DWIDTH1
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* - VVECTOR
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*
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* Input Parameters:
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* file - The input file stream pointing to the first line of the
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* glyph's information (right after STARTCHAR).
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* ginfo - A glyphinfo_t struct to fill with the glyph's information.
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*
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****************************************************************************/
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static void bdf_getglyphinfo(FILE *file, glyphinfo_t *ginfo)
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{
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char line[BDF_MAX_LINE_LENGTH];
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char lineCopy[BDF_MAX_LINE_LENGTH];
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char *str, *token, *saveptr1;
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bool done;
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done = false;
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while (fgets(line, BDF_MAX_LINE_LENGTH, file) != NULL && !done)
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{
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trimLine(line);
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strcpy(lineCopy, line);
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str = line;
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while ((token = (char *)strtok_r(str, " ", &saveptr1)))
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{
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/* ENCODING information */
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if (strcmp(token, "ENCODING") == 0)
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{
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token = (char *)strtok_r(NULL, " ", &saveptr1);
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ginfo->encoding = atoi(token);
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}
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/* DWIDTH information */
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if (strcmp(token, "DWIDTH") == 0)
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{
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token = (char *)strtok_r(NULL, " ", &saveptr1);
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ginfo->dw_x0 = atoi(token);
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token = (char *)strtok_r(NULL, " ", &saveptr1);
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ginfo->dw_y0 = atoi(token);
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}
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/* BBX information */
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else if (strcmp(token, "BBX") == 0)
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{
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int bbxinfo[4];
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bdf_parseintline(lineCopy, 4, bbxinfo);
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ginfo->bb_w = bbxinfo[0];
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ginfo->bb_h = bbxinfo[1];
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ginfo->bb_x_off = bbxinfo[2];
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ginfo->bb_y_off = bbxinfo[3];
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/* This is the last BDF property of interest*/
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done = true;
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}
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str = NULL;
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}
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}
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}
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/****************************************************************************
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* Name: bdf_getglyphbitmap
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*
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* Description:
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* Obtains the character bitmap information for an individual glyph.
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*
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* Input Parameters:
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* file - The input file stream pointing to the first line of the
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* glyph's bitmap (right after BITMAP).
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* ginfo - A glyphinfo_t struct to fill with the glyph's bitmap.
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*
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****************************************************************************/
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static void bdf_getglyphbitmap(FILE *file, glyphinfo_t *ginfo)
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{
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char line[BDF_MAX_LINE_LENGTH];
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uint64_t *bitmap;
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bool readingbitmap;
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bitmap = ginfo->bitmap;
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readingbitmap = true;
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while (readingbitmap)
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{
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if (fgets(line, BDF_MAX_LINE_LENGTH, file) != NULL)
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{
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trimLine(line);
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if (strcmp(line, "ENDCHAR") == 0)
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{
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readingbitmap = false;
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}
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else
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{
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char *endptr;
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*bitmap = strtoul(line, &endptr, 16);
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bitmap++;
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}
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}
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else
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{
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/* error condition */
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readingbitmap = false;
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}
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}
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}
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/****************************************************************************
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* Name: bdf_getstride
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*
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* Description:
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* Obtains the stride for an individual glyph. The stride is the width
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* of one glyph's bitmap row in bytes.
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*
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* Input Parameters:
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* ginfo - A glyphinfo_t struct with the glyph's information.
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* stride - A pointer to memory provided by the caller in which to
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* return the stride.
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*
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****************************************************************************/
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static void bdf_getstride(glyphinfo_t *ginfo, uint32_t *stride)
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{
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*stride = (ginfo->bb_w % 8 == 0) ? ginfo->bb_w / 8 : ginfo->bb_w / 8 + 1;
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}
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/****************************************************************************
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* Name: bdf_printoutput
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*
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* Description:
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* Prints to the output stream the information of an individual glyph in
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* the NuttX font format.
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*
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* Input Parameters:
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* out - The output stream.
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* ginfo - A glyphinfo_t struct with the glyph's information.
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* nxmetric - A nx_fontmetric_t struct with the glyph's information.
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*
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****************************************************************************/
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static void bdf_printoutput(FILE *out,
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glyphinfo_t *ginfo,
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nx_fontmetric_t *nxmetric)
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{
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/* Only interested in the 7 and 8 bit ranges */
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if ((ginfo->encoding >= NXFONT_MIN7BIT &&
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ginfo->encoding <= NXFONT_MAX7BIT) ||
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(ginfo->encoding >= NXFONT_MIN8BIT &&
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ginfo->encoding <= NXFONT_MAX8BIT))
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{
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/* Glyph general info */
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if (ginfo->bb_x_off < 0)
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{
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fprintf(out,
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"/* %s (%d) -- NOTE: Xoffset should be %d, not 0. */\n",
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ginfo->name,
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ginfo->encoding,
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ginfo->bb_x_off);
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}
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else
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{
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fprintf(out, "/* %s (%d) */\n", ginfo->name, ginfo->encoding);
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}
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/* Glyph metrics */
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fprintf(out,
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"#define NXFONT_METRICS_%d {%d, %d, %d, %d, %d, 0}\n",
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ginfo->encoding,
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nxmetric->stride,
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nxmetric->width,
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nxmetric->height,
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nxmetric->xoffset,
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nxmetric->yoffset);
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/* Glyph bitmap */
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fprintf(out, "#define NXFONT_BITMAP_%d {", ginfo->encoding);
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int i, j;
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for (i = 0; i < ginfo->bb_h - 1; i++)
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{
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for (j = 1; j <= nxmetric->stride; j++)
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{
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int nxbyteoffset;
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uint8_t nxbyte = 0;
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uint64_t tempbitmap = ginfo->bitmap[i];
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/* Get the next byte */
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nxbyteoffset = (nxmetric->stride - j) * 8;
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nxbyte = (uint8_t)(tempbitmap >> nxbyteoffset);
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fprintf(out, "0x%x, ", nxbyte);
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}
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}
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/* Different behavior for the last bitmap */
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for (j = 1; j <= nxmetric->stride; j++)
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{
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int nxbyteoffset;
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uint8_t nxbyte = 0;
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uint64_t tempbitmap = ginfo->bitmap[i];
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/* Get the next byte */
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nxbyteoffset = (nxmetric->stride - j) * 8;
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nxbyte = (uint8_t)(tempbitmap >> nxbyteoffset);
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if (j == nxmetric->stride)
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{
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fprintf(out, "0x%x}\n", nxbyte);
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}
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else
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{
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fprintf(out, "0x%x, ", nxbyte);
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}
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}
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fprintf(out, "\n");
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}
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}
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/****************************************************************************
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* Main
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****************************************************************************/
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int main(int argc, char **argv)
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{
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FILE *file, *out;
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|
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;
|
|
}
|