From 3e13254858c69e76c86ba19aa9cb6e24454b7555 Mon Sep 17 00:00:00 2001
From: pancake <pancake@dazo>
Date: Mon, 30 Apr 2007 06:26:27 +0200
Subject: * Initial import of the logotool utility

---
 logotool/compress.c | 72 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 logotool/compress.c

(limited to 'logotool/compress.c')

diff --git a/logotool/compress.c b/logotool/compress.c
new file mode 100644
index 0000000..327d50e
--- /dev/null
+++ b/logotool/compress.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2007
+ *       pancake <pancake@youterm.com>
+ *       esteve <esteve@eslack.org>
+ *
+ * logotool is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * logotool is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with logotool; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <getopt.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+int compress_image(char *srcf, char *dstf, int w, int h)
+{
+	char buf[256];
+	char tmp[256];
+	int fd, fdout;
+	int i,ret;
+
+	fd = open(srcf, O_RDONLY);
+	if (fd == -1) {
+		printf("Cannot open file '%s' \n", srcf);
+		return 1;
+	}
+
+	fdout  = open( dstf, O_CREAT | O_WRONLY , 0660 );
+	if (fdout == -1) {
+		printf("Cannot open file '%s' for writing\n", dstf);
+		return 1;
+	}
+
+	// TODO: force little endian!! (not safe for big endian)
+	write(fdout, &w, 4);
+	write(fdout, &h, 4);
+
+	for(;;) {
+		unsigned char c;
+		ret = read(fd, buf, 3*80);
+		c = (int)((2*ret/3)>>1);
+		write(fdout,&c, 1);
+		if (ret <= 0) break;
+		for(i=0;i<ret;i+=3) {
+			tmp[0]  = buf[i+0]&0xf8;
+			tmp[0] |= buf[i+1]&0x07;
+			tmp[1]  = buf[i+1]&0xe0;
+			tmp[1] |= buf[i+1]&0x1f;
+			write(fdout, tmp, 2);
+		}
+	}
+	close(fd);
+	close(fdout);
+	printf("eval PATH=$PWD:$PATH logotool -u %s\n", dstf);
+	return 1;
+}
-- 
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