+sub img_egapal {
+ my ($palette) = @_;
+ return eval {
+ require MIME::Base64;
+ require Digest::CRC;
+
+ local $/;
+ open my $img, '<:bytes', "data/$imgfile" or die "$!\n";
+ my $imgdata = readline $img;
+
+ my $offset = 0x29 - 4;
+ my $len = 16 * 3;
+ my $chunklen = $len + 4;
+ substr($imgdata, $offset+4, $len) = pack 'H*', join '', @{$palette};
+ my ($p, $crc) = unpack "x${offset}a${chunklen}N", $imgdata;
+ substr($imgdata, $offset+4+$len, 4) = pack 'N', Digest::CRC::crc32($p);
+
+ return sprintf '<img src="data:image/png;base64,%s">',
+ MIME::Base64::encode_base64($imgdata);
+ } || $@;
+}
+