4e5fb58dbc
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3824 42af7a65-404d-4744-a932-0658087f49c3
676 lines
20 KiB
C
676 lines
20 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 <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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/*
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#define VERBOSE
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#define DBG
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*/
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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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#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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* Public 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: 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];
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char lineCopy[BDF_MAX_LINE_LENGTH];
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char *str, *token, *saveptr1;
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char *input, *output;
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/* FONTBOUNDINGBOX properties*/
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int fbb_x = 0;
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int fbb_y = 0;
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int fbb_x_off = 0;
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int fbb_y_off = 0;
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/* Input BDF file */
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input = argv[1];
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if (input == NULL)
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{
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printf("%s: no input file\n", argv[0]);
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exit(0);
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}
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file = fopen(input, "r");
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if (file == NULL)
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{
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printf("%s: error opening file %s\n", argv[0], input);
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exit(0);
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}
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else
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{
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#ifdef VERBOSE
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printf("Opening \"%s\"\n", input);
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#endif /* VERBOSE */
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}
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/* Output file */
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if (argv[2])
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{
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output = argv[2];
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}
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else
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{
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output = "nxfonts_myfont.h";
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}
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out = fopen(output, "w");
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if (out == NULL)
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{
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printf("%s: error opening file %s\n", argv[0], output);
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fclose(file);
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exit(0);
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}
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else
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{
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while (fgets(line, BDF_MAX_LINE_LENGTH, file) != NULL)
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{
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#ifdef DBG
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printf("--\n");
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#endif /* DBG */
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// Save a copy of the line
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strcpy(lineCopy,line);
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// Clean it
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trimLine(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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/* FONTBOUNDINGBOX - Global font information */
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if (strcmp(token, "FONTBOUNDINGBOX") == 0)
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{
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int fbbinfo[4];
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bdf_parseintline(lineCopy, 4, fbbinfo);
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fbb_x = fbbinfo[0];
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fbb_y = fbbinfo[1];
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fbb_x_off = fbbinfo[2];
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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;
|
|
}
|