bmf2bdf
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kraus
parent
aac75a052d
commit
74823d48f6
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@ -0,0 +1,17 @@
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CFLAGS = -g -Wall -Wno-unused-but-set-variable
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#CFLAGS = -O4 -Wall
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SRC = bmf2bdf.c
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OBJ = $(SRC:.c=.o)
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bmf2bdf: $(OBJ)
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$(CC) $(CFLAGS) $(LDFLAGS) $(OBJ) -o bmf2bdf
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clean:
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-rm $(OBJ) bmf2bdf
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test:
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./bmf2bdf 24sans-t.bmf >24sans_t.bdf
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../bdfconv/bdfconv -f 1 -v 24sans_t.bdf -n 24sans_t -d ../bdf/7x14.bdf
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convert -trim -flip bdf.tga 24sans_t.png
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@ -0,0 +1,314 @@
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/*
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bmf2bdf.c
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Converter for bmf file format to bdf: http://bmf.php5.cz/
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Copyright (c) 2017, olikraus@gmail.com
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this list
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of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice, this
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list of conditions and the following disclaimer in the documentation and/or other
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materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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/* http://bmf.php5.cz/index.php?page=format */
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uint8_t threshold = 128; // gray level threshold
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FILE *bdf_fp = NULL;
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int16_t lineHeight;
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int16_t sizeOver;
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int16_t sizeUnder;
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int16_t addSpace;
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int16_t sizeInner;
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int16_t usedColors;
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int16_t highestColor;
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int16_t alphaBits;
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int16_t extraPalettes;
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int16_t reserved;
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int16_t numColors;
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uint8_t titleLength;
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uint16_t asciiChars;
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uint8_t whichChar;
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uint8_t palette[256*3];
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char title[256+2];
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int8_t tablo[5];
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uint8_t bitmap[256*256];
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void write_bdf_header(void)
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{
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fprintf(bdf_fp, "STARTFONT 2.1\n");
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fprintf(bdf_fp, "FONT");
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fprintf(bdf_fp, " \"%s\"\n", title);
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fprintf(bdf_fp, "SIZE 16 75 75\n");
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fprintf(bdf_fp, "FONTBOUNDINGBOX 16 16 0 0\n");
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fprintf(bdf_fp, "STARTPROPERTIES 3\n");
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fprintf(bdf_fp, "COPYRIGHT \"http://bmf.php5.cz\"");
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fprintf(bdf_fp, "FONT_ASCENT 0\n");
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fprintf(bdf_fp, "FONT_DESCENT 0\n");
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fprintf(bdf_fp, "ENDPROPERTIES\n");
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fprintf(bdf_fp, "CHARS %d\n", asciiChars);
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}
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uint8_t get_pixel(int x, int y)
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{
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int width, height;
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uint16_t idx;
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width = (uint8_t)tablo[0];
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height = (uint8_t)tablo[1];
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if ( x < 0 )
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return 0;
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if ( x >= width )
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return 0;
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if ( y < 0 )
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return 0;
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if ( y >= height )
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return 0;
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idx = bitmap[x+y*width];
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//uint8_t intensity = (palette[(idx-1)*3]+palette[(idx-1)*3+1]+palette[(idx-1)*3+2])/3;
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if ( idx == 0 )
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return 0;
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return 1;
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}
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uint8_t get_pixel_byte(int x, int y)
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{
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uint8_t b = 0;
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int i;
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for( i = 0; i < 8; i++ )
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{
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b <<= 1;
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b |= get_pixel(x + i,y);
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}
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return b;
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}
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void write_4bit(int x)
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{
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if ( bdf_fp == NULL )
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return;
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if ( x < 10 )
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fprintf(bdf_fp, "%c", x + '0' );
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else
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fprintf(bdf_fp, "%c", x - 10 + 'a' );
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}
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void write_byte(int x)
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{
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write_4bit(x >> 4);
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write_4bit(x & 15);
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}
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void write_bdf_bitmap(uint32_t encoding)
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{
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int x, y;
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int width, height;
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width = (uint8_t)tablo[0];
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height = (uint8_t)tablo[1];
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if ( bdf_fp == NULL )
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return;
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fprintf(bdf_fp, "STARTCHAR %u\n", encoding);
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fprintf(bdf_fp, "ENCODING %u\n", encoding);
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fprintf(bdf_fp, "DWIDTH %d 0\n", tablo[4]);
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fprintf(bdf_fp, "BBX %d %d 0 0\n", width, height);
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fprintf(bdf_fp, "BITMAP\n");
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for( y = 0; y < height; y++ )
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{
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x = 0;
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while( x < width )
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{
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write_byte(get_pixel_byte(x,y));
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x+=8;
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}
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fprintf(bdf_fp, "\n" );
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}
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fprintf(bdf_fp, "ENDCHAR\n");
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encoding++;
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}
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uint16_t readWord(FILE *file)
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{
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uint16_t l, h;
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l = (uint8_t)fgetc(file);
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h = (uint8_t)fgetc(file);
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return h*256+l;
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}
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int processBMF(const char *filename)
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{
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FILE *file = fopen(filename, "rb");
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static int8_t buffer[18];
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int8_t version;
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uint8_t w, h;
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//uint8_t x, y;
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uint16_t bitmapSize;
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int i;
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if ( fread(buffer, 17, 1, file) != 1 )
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return fclose(file), 0;
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version = buffer[4];
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if (strncmp((char *)buffer, "\xE1\xE6\xD5\x1A", 4) != 0 || (version != 0x11 && version != 0x12))
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{
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return fclose(file), 0; // not a BMF, version 1.1 or 1.2
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}
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lineHeight = buffer[5];
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sizeOver = buffer[6];
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sizeUnder = buffer[7];
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addSpace = buffer[8];
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sizeInner = buffer[9];
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usedColors = buffer[10];
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highestColor = buffer[11];
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alphaBits = buffer[12];
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extraPalettes = buffer[13];
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reserved = buffer[14];
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numColors = buffer[16];
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//printf("numColors=%d\n", (int)numColors);
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if ( fread(palette, numColors * 3, 1, file) != 1 )
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return fclose(file), 0;
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for (i = 0; i < numColors * 3; i++)
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{
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palette[i] *= 4; // stretch 0..63 values to 0..255
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}
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/*
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for (i = 0; i < numColors ; i++)
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{
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uint8_t intensity = (palette[i*3]+palette[i*3+1]+palette[i*3+2])/3;
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printf("color %d: %d %d %d --> %d\n", i,
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palette[i*3], palette[i*3+1], palette[i*3+2], intensity);
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}
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*/
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titleLength = (uint8_t)fgetc(file);
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if ( fread(title, titleLength, 1, file) != 1 )
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return fclose(file), 0;
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title[titleLength] = '\0';
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//printf("title=%s\n", title);
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asciiChars = readWord(file);
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//printf("asciiChars=%d\n", (int)asciiChars);
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write_bdf_header();
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for (i = 0; i < asciiChars; i++)
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{
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whichChar = (uint8_t)fgetc(file);
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//printf("whichChar=%d\n", (int)whichChar);
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if ( fread(tablo, 5, 1, file) != 1 )
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return fclose(file), 0;
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w = tablo[0];
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h = tablo[1];
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bitmapSize = ((uint16_t)w*(uint16_t)h);
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if ( bitmapSize > 0 )
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{
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if ( fread(bitmap, bitmapSize, 1, file) != 1 )
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return fclose(file), 0;
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}
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/*
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for( y = 0; y < h; y++)
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{
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for( x = 0; x < w; x++)
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{
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uint16_t idx = bitmap[x+y*w];
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if ( idx == 0 ) // color 0 is transparent
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{
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printf(" ");
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}
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else
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{
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uint8_t intensity = (palette[(idx-1)*3]+palette[(idx-1)*3+1]+palette[(idx-1)*3+2])/3;
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if ( intensity < threshold )
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{
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printf(" ");
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}
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else
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{
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printf("*");
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}
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}
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}
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printf("\n");
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}
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*/
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write_bdf_bitmap(whichChar);
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}
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/*
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if (version >= 0x12) { // next goes for version 1.2 only
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unicodeChars = fread(file, 4);
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for (i = 0; i < unicodeChars; i++) {
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whichChar = fread(file, 4);
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tablo[whichChar] = fread(file, 5);
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if (bitmapSize = tablo[whichChar][0] * tablo[whichChar][1]) {
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bitmaps[whichChar] = fread(file, bitmapSize);
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}
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}
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numKerningPairs = fread(file, 4);
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kerningPairs = [];
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for (i = 0; i < numKerningPairs; i++) {
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fread(file, buffer, 10);
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kerningPairs []= buffer;
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}
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}
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*/
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fclose(file);
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return 1;
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}
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void help(void)
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{
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puts("bmf2bdf <file.bmf>");
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}
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int main(int argc, char **argv)
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{
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bdf_fp = stdout;
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if ( argc < 2 )
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{
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help();
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return 0;
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}
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processBMF(argv[1]);
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}
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