--- cf.schmorp.de/server/utils/cfutil.in	2007/04/21 11:55:36	1.30
+++ cf.schmorp.de/server/utils/cfutil.in	2007/04/26 00:39:18	1.31
@@ -11,6 +11,7 @@
 my $IDENTIFY = "@IDENTIFY@";
 my $OPTIPNG  = "@OPTIPNG@";
 my $RSYNC    = "@RSYNC@";
+my $PNGNQ    = "@PNGNQ@";
 
 use Getopt::Long;
 use Coro::Event;
@@ -156,7 +157,7 @@
                           . "| $exec_prefix/bin/cfhq2xa $w $h $wrap"
                           . "| convert -depth 8 -size ".($w * 2)."x".($h * 2)." rgba:- $QUANTIZE -quality 00 png32:\Q$other\E~"
                              and die "convert/hq2xa pipeline error: status $? ($!)";
-                     system $OPTIPNG, "-o5", "-i0", "-q", "$other~";
+                     system $OPTIPNG, "-i0", "-q", "$other~";
                      die "$other~ has zero size, aborting." unless -s "$other~";
                      rename "$other~", $other;
                   };
@@ -172,7 +173,25 @@
                if (0 > aio_lstat $other or (-M _) > (-M $path)) {
                   fork_sub {
                      system "convert png:\Q$path\E -geometry 50% -filter lanczos $QUANTIZE -quality 00 png32:\Q$other\E~";
-                     system $OPTIPNG, "-o5", "-i0", "-q", "$other~";
+                     system $OPTIPNG, "-i0", "-q", "$other~";
+
+                     # reduce smoothfaces >10000 bytes
+                     if ($stem =~ /_S\./ && (-s "$other~") > 10000) {
+                        my $ncolor = 256;
+                        while () {
+                           system "<\Q$other~\E $PNGNQ -n$ncolor >\Q$other~~\E";
+                           system $OPTIPNG, "-i0", "-q", "$other~~";
+                           last if 10000 > -s "$other~~";
+                           $ncolor = int $ncolor * 0.9;
+                           $ncolor > 8 or die "cannot reduce filesize to < 10000 bytes";
+                        }
+
+                        printf "reduced %s from %d to %d bytes using %d colours.\n",
+                              $other, -s "$other~", -s "$other~~", $ncolor
+                           if $VERBOSE > 0;
+                        rename "$other~~", "$other~";
+                     }
+
                      die "$other~ has zero size, aborting." unless -s "$other~";
                      rename "$other~", $other;
                   };