/**
* @param FileHandler $fh
* @param FileHandler $fhW
* @param float $ratio
* @param LogicalScreenDescriptor $lsd
*/
private static function readExtensionBlock($fh, $fhW, $ratio, $lsd)
{
$fh->seekForward(1);
$blockLabel = $fh->peekByte();
switch (ord($blockLabel)) {
case AbstractExtensionBlock::LABEL_APPLICATION:
$adb = new ApplicationExtension($fh);
$adb->encodeToFile($fhW);
break;
case AbstractExtensionBlock::LABEL_COMMENT:
$ceb = new CommentExtension($fh);
$ceb->encodeToFile($fhW);
break;
case AbstractExtensionBlock::LABEL_GRAPHICS_CONTROL:
$gce = new GraphicControlExtension($fh);
self::resizeGraphicControlExtensionBlock($gce, $ratio, $fhW, $lsd);
break;
case AbstractExtensionBlock::LABEL_PLAIN_TEXT:
$pte = new PlainTextExtension($fh);
$pte->encodeToFile($fhW);
break;
case AbstractExtensionBlock::CONTROL_TRAILER:
break;
default:
$fh->seekForward(1);
while (!$fh->compareByte("")) {
$fh->seekForward(1);
}
}
if ($fh->compareByte("")) {
$fh->readByte();
}
}
/**
* @param CommentExtension $ceb
*/
public static function dumpCommentExtensionBlock($ceb)
{
echo " Comment Extension Block............: CEB 0xFE (254)\n";
echo " - sub blocks total length.........: " . BinStringStatic::_strlen($ceb->dataSubBlocks) . "\n";
echo " - sub blocks content..............: " . $ceb->getComment() . "\n";
}