Next syscons update (given up on numbering :)

Removed screensavers from syscons, they are now LKM's. This makes it
possible to do some really "interesting" screensavers...
Fixed bug that sometimes caused garbage to appear when leaving
"scroll-lock" history.
Reformattet indentation, it got too deep for a normal 80 pos screen.
Split up in syscons.c & syscons.h for use with the saver-lkm's.
Temporarily removed -s option from vidcontrol, savers should now
be loaded with modload.

1 files changed, 111 insertions, 0 deletions

diff --git a/sys/dev/syscons/star/star_saver.c b/sys/dev/syscons/star/star_saver.c
new file mode 100644
index 0000000..f18dc09
--- /dev/null
+++ b/sys/dev/syscons/star/star_saver.c
@@ -0,0 +1,111 @@
+/*-
+ * Copyright (c) 1995 Søren Schmidt
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer 
+ *    in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/conf.h>
+#include <sys/exec.h>
+#include <sys/sysent.h>
+#include <sys/lkm.h>
+#include <sys/errno.h>
+#include <saver.h>
+
+MOD_MISC("star_saver")
+
+void (*current_saver)();
+void (*old_saver)();
+
+#define NUM_STARS	50
+
+/*
+ * Alternate saver that got its inspiration from a well known utility
+ * package for an inferior^H^H^H^H^H^Hfamous OS.
+ */
+void 
+star_saver(int blank)
+{
+	scr_stat	*scp = cur_console;
+	int		cell, i;
+	char 		pattern[] = {"...........++++***   "};
+	char		colors[] = {FG_DARKGREY, FG_LIGHTGREY, 
+				    FG_WHITE, FG_LIGHTCYAN};
+	static u_short 	stars[NUM_STARS][2];
+ 
+	if (blank) {
+		if (!scrn_blanked) {
+			scrn_blanked = 1;
+			fillw((FG_LIGHTGREY|BG_BLACK)<<8|scr_map[0x20], Crtat, 
+			      scp->xsize * scp->ysize);
+			set_border(0);
+			for(i=0; i<NUM_STARS; i++) {
+				stars[i][0] = 
+					random() % (scp->xsize*scp->ysize);
+				stars[i][1] = 0;
+			}
+		}
+		cell = random() % NUM_STARS;
+		*((u_short*)(Crtat + stars[cell][0])) = 
+			scr_map[pattern[stars[cell][1]]] | 
+				colors[random()%sizeof(colors)] << 8;
+		if ((stars[cell][1]+=(random()%4)) >= sizeof(pattern)-1) {
+			stars[cell][0] = random() % (scp->xsize*scp->ysize);
+			stars[cell][1] = 0;
+		}
+	}
+	else {
+		if (scrn_blanked) {
+			set_border(scp->border);
+			scrn_blanked = 0;
+			scp->status |= UPDATE_SCREEN;
+		}
+	}
+}
+
+saver_load(struct lkm_table *lkmtp, int cmd)
+{
+	(*current_saver)(0);
+	old_saver = current_saver;
+	current_saver = star_saver;
+	uprintf("star screen saver installed\n");
+	return 0;
+}
+
+saver_unload(struct lkm_table *lkmtp, int cmd)
+{
+	(*current_saver)(0);
+	current_saver = old_saver;
+	uprintf("star screen saver removed\n");
+	return 0;
+}
+
+saver_init(struct lkm_table *lkmtp, int cmd, int ver)
+{
+	DISPATCH(lkmtp, cmd, ver, saver_load, saver_unload, nosys);
+}