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authorMark Purcell <msp@debian.org>2010-02-25 21:13:46 +1100
committeretobi <git@e-tobi.net>2013-09-03 09:48:46 +0200
commit665818f1969f893f05edf5b70eb1804c89b2829e (patch)
tree34ba68cee03c52d769a5a51b456b7e9d63cd091a /util/alevt/bdf2xbm.c
parent109c7947d6a11a2a54eff1b19615ed80ea2f0602 (diff)
parent9fe4d4ea9c054e539ab679ed2e9c076c35beb69d (diff)
downloadlinux-dvb-apps-665818f1969f893f05edf5b70eb1804c89b2829e.tar.gz
Imported Debian patch 1.1.1+rev1355-1debian/1.1.1+rev1355-1
Diffstat (limited to 'util/alevt/bdf2xbm.c')
-rw-r--r--util/alevt/bdf2xbm.c212
1 files changed, 212 insertions, 0 deletions
diff --git a/util/alevt/bdf2xbm.c b/util/alevt/bdf2xbm.c
new file mode 100644
index 0000000..74d238e
--- /dev/null
+++ b/util/alevt/bdf2xbm.c
@@ -0,0 +1,212 @@
+/*
+ Simple program to convert a bdf-font to a bitmap.
+ The characters are arranged in a 32x8 matrix.
+ usage: bdf2xbm [identifier] <bdf >xbm
+ Copyright 1998,1999 by E. Toernig (froese@gmx.de)
+*/
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <stdarg.h>
+
+#define not !
+#define streq(a,b) (strcmp((a),(b)) == 0)
+
+int lineno;
+char *word[64];
+int nword;
+
+char *font = "font%dx%d";
+int w, h, bpl;
+unsigned char *bmap;
+
+
+static void error(char *fmt, ...)
+{
+ va_list args;
+
+ va_start(args, fmt);
+ fprintf(stderr, "bdf2xbm");
+ if (lineno)
+ fprintf(stderr, ":%d", lineno);
+ fprintf(stderr, ": ");
+ vfprintf(stderr, fmt, args);
+ fputc('\n', stderr);
+ exit(1);
+}
+
+
+static int nextline()
+{
+ static char buf[256];
+ char *p;
+ int i;
+
+ do
+ {
+ nword = 0;
+ if (fgets(buf, sizeof(buf), stdin) == 0)
+ return nword;
+ lineno++;
+
+ p = buf;
+ for (;;)
+ {
+ while (isspace(*p))
+ p++;
+ if (*p == 0)
+ break;
+ word[nword++] = p;
+ while (*p && not isspace(*p))
+ *p = toupper(*p), p++;
+ if (*p == 0)
+ break;
+ *p++ = 0;
+ }
+ } while (nword == 0);
+
+ for (i = nword; i < 64; ++i)
+ word[i] = "";
+ return nword;
+}
+
+
+static inline void setbit(int ch, int x, int y)
+{
+
+ int yo = ch / 32 * h + y;
+ int xo = ch % 32 * w + x;
+
+ bmap[yo * bpl + xo / 8] |= 1 << (xo % 8);
+}
+
+
+static void dobitmap(int ch, int x, int y)
+{
+ int i, j;
+
+ for (i = 0; i < y; ++i)
+ {
+ nextline();
+ if (nword > 1 || strlen(word[0]) != (x + 7) / 8 * 2)
+ error("bad BITMAP");
+ for (j = 0; j < x; ++j)
+ {
+ int c = word[0][j / 4];
+ if (c >= '0' && c <= '9')
+ c -= '0';
+ else if (c >= 'A' && c <= 'F')
+ c -= 'A' - 10;
+ else
+ error("bad hexchar in BITMAP");
+ if (c & (8 >> (j % 4)))
+ setbit(ch, j, i);
+ }
+ }
+}
+
+
+static void dochar()
+{
+ int ch = -1, x = -1, y = -1;
+
+ while (nextline())
+ {
+ if (streq(word[0], "ENDCHAR"))
+ return;
+ else if (streq(word[0], "ENCODING") && nword == 2)
+ {
+ ch = atoi(word[1]);
+ if (ch < 0 || ch > 255)
+ error("bad character code %d", ch);
+ }
+ else if (streq(word[0], "BBX") && nword == 5)
+ {
+ x = atoi(word[1]), y = atoi(word[2]);
+ if (x < 1 || x > 64 || y < 1 || y > 64)
+ error("bad BBX (%dx%d)", x, y);
+ }
+ else if (streq(word[0], "BITMAP"))
+ {
+ if (x < 0)
+ error("missing BBX");
+ if (ch < 0)
+ error("missing ENDCODING");
+ dobitmap(ch, x, y);
+ }
+ }
+ error("unexpected EOF (missing ENDCHAR)");
+}
+
+
+static void dofile()
+{
+ lineno = 0;
+ w = h = 0;
+ bmap = 0;
+
+ nextline();
+ if (nword != 2 || not streq(word[0], "STARTFONT"))
+ error("not a bdf-file");
+
+ while (nextline())
+ {
+ if (streq(word[0], "ENDFONT"))
+ return;
+ else if (streq(word[0], "FONTBOUNDINGBOX") && nword == 5)
+ {
+ if (bmap)
+ error("multiple FONTBOUNDINGBOXes!?!");
+ w = atoi(word[1]), h = atoi(word[2]);
+ if (w < 1 || w > 64 || h < 1 || h > 64)
+ error("bad bounding box %dx%d\n", w, h);
+ bpl = (w*32+7)/8; // rounding is unnecessary
+ bmap = calloc(1, bpl * h*8);
+ if (bmap == 0)
+ error("out of memory");
+ }
+ else if (streq(word[0], "STARTCHAR"))
+ {
+ if (not bmap)
+ error("no FONTBOUNDINGBOX");
+ dochar();
+ }
+ }
+ error("unexpected EOF (missing ENDFONT)");
+}
+
+
+static void writexbm()
+{
+ char buf[256];
+ int i, j;
+ unsigned char *p = bmap;
+
+ if (not bmap)
+ return;
+
+ sprintf(buf, font, w, h);
+
+ printf("#define %s_width %d\n", buf, 32 * w);
+ printf("#define %s_height %d\n", buf, 8 * h);
+ printf("static unsigned char %s_bits[] = {\n", buf);
+ for (i = 0; i < 16 * h * w / 8; ++i)
+ {
+ for (j = 0; j < 16; ++j)
+ printf("0x%02x,", *p++);
+ printf("\n");
+ }
+ printf("};\n");
+}
+
+
+int main(int argc, char **argv)
+{
+ if (argc > 1)
+ font = argv[1];
+ dofile();
+ writexbm();
+ exit(0);
+}