16bit Huffman table for pixel difference compression on udl(4) devices.

1 files changed, 46 insertions, 0 deletions

diff --git a/sys/dev/microcode/udl/build.c b/sys/dev/microcode/udl/build.c
new file mode 100644
index 00000000000..4d7c076e42b
--- /dev/null
+++ b/sys/dev/microcode/udl/build.c
@@ -0,0 +1,46 @@
+/*	$OpenBSD: build.c,v 1.1 2009/08/25 19:04:49 mglocker Exp $ */
+
+/*
+ * Copyright (c) 2009 Marcus Glocker <mglocker@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+
+#include <err.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "udl_huffman.h"
+
+#define FILENAME "udl_huffman"
+
+int
+main(void)
+{
+	int fd, i;
+
+	fd = open(FILENAME, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+	if (fd == -1)
+		err(1, "%s", FILENAME);
+
+	for (i = 0; i < UDL_HUFFMAN_RECORDS; i++) {
+		udl_huffman[i].value = htobe32(udl_huffman[i].value);
+		write(fd, &udl_huffman[i], 5);
+	}
+
+	close(fd);
+
+	return (0);
+}