protected function unfilter(ByteArray $ba, $width, $height, $bpp)
{
$i = 0;
for ($y = 0; $y < $height; $y++) {
switch ($ba[$i++]) {
case 0:
$i += $width * $bpp;
break;
case 1:
foreach (range(0, $width * $bpp - 1) as $x) {
if ($x - $bpp >= 0) {
$ba->offsetSet($i, $ba->offsetGet($i) + $ba->offsetGet($i - $bpp) & 0xff);
}
$i++;
}
break;
case 2:
for ($x = 0; $x < $width * $bpp; $x++) {
if ($y > 0) {
$ba->offsetSet($i, $ba->offsetGet($i) + $ba->offsetGet($i - $width * $bpp - 1) & 0xff);
}
$i++;
}
break;
case 3:
for ($x = 0; $x < $width * $bpp; $x++) {
$left = $x - $bpp >= 0 ? $ba->offsetGet($i - $bpp) : 0;
$above = $y - 1 >= 0 ? $ba->offsetGet($i - $width * $bpp - 1) : 0;
$ba->offsetSet($i, $ba->offsetGet($i) + floor(($left + $above) / 2) & 0xff);
$i++;
}
break;
case 4:
for ($x = 0; $x < $width * $bpp; $x++) {
$left = $x - $bpp >= 0 ? $ba->offsetGet($i - $bpp) : 0;
$above = $y > 0 ? $ba->offsetGet($i - $width * $bpp - 1) : 0;
$upper_left = $x - $bpp >= 0 && $y > 0 ? $ba->offsetGet($i - $width * $bpp - 1 - $bpp) : 0;
$ba->offsetSet($i, $ba->offsetGet($i) + $this->paethPredictor($left, $above, $upper_left) & 0xff);
$i++;
}
break;
default:
throw new PNGDecodeException('未知のフィルタです。');
}
}
}
//2 - Disconnect the client by closing the socket
//3 - Log / Save IP / Ban IP, whatever will do.
//4 - and terminate thread.
echo 'Error: LENGTH REFUSED!' . "\n";
}
//Okay now the interesting part
//is the [buffer data] (full size - packet header)
//greater OR equal the [capsule data] length we have been told earlier?
if ($BUFFER->size() - 5 >= $length) {
if ($VERBOSE) {
echo 'Enough bytes, processing...' . "\n";
}
//Awesome we have enough bytes now :D
//Lets continue the "so waited" code part
//Copy the 5+length first bytes from the buffer to $CAPSULE.
$CAPSULE = new ByteArray();
$CAPSULE->append(substr($BUFFER->getBuffer(), 5, $length));
//position to 5 and read length bytes
//PROCESS THE CAPSULE (switch and stuff)
//-----------------------------------------------
if ($VERBOSE) {
echo 'Capsule: ' . $CAPSULE->getBuffer() . "\n";
}
while (true) {
//a loop to parse all CMDs in the capsule
switch ($CAPSULE->readWord()) {
//-------------------------
case PCKT_R_WORLD_EOF:
echo '[capsuleHandler] End of world server list' . "\n";
break;
//-------------------------
echo "bytes md5:";
echo md5($a);
echo "\n";
var_dump($b4);
$bytearray->compress();
echo "compress\n";
var_dump($bytearray);
$b = $bytearray->toString();
$b2 = new ByteArray($a);
echo $b2->readBoolean();
echo "\n";
echo $b2->readUTF();
echo "\n";
var_dump($b2);
$b3 = new ByteArray($b);
var_dump($b3);
$b3->uncompress();
echo $b3->readBoolean();
echo "\n";
echo $b3->readUTF();
echo "\n";
var_dump($b3);
echo memory_get_usage();
echo "\n";
$ba1 = new ByteArray();
for ($i = 0; $i < 20000; $i++) {
$ba1->writeUTF("this is a test!!!");
}
echo memory_get_usage();
echo "\n";
var_dump($ba1);