/**
* @return string
*/
public function encode()
{
$packedFields = 0;
$packedFields |= $this->reserved << 5 & 0x70;
$packedFields |= $this->disposalMethod << 2 & 0x1c;
$packedFields |= $this->userInputFlag ? 0x2 : 0x0;
$packedFields |= $this->transparentColorFlag ? 0x1 : 0x0;
return "!" . chr($this->blockLabel) . "" . chr($packedFields & 0xff) . DataHandler::packUint16($this->delayTime) . chr($this->transparentColorIndex) . "" . $this->imageDescriptor->encode();
}
/**
* @return string
*/
public function encode()
{
$ctSize = BinStringStatic::_strlen($this->colorTable);
if ($ctSize > 0) {
$this->colorTableFlag = true;
$this->colorTableSize = $ctSize / 3;
} else {
$this->colorTableFlag = false;
$this->colorTableSize = 2;
}
$packedFields = 0;
$packedFields |= $this->colorTableFlag ? 0x80 : 0x0;
$packedFields |= $this->interlaceFlag ? 0x40 : 0x0;
$packedFields |= $this->sortFlag ? 0x20 : 0x0;
$packedFields |= $this->reserved << 3 & 0x18;
$packedFields |= ceil(log($this->colorTableSize) / log(2)) - 1;
//$packedFields |= $this->ctSizeList[$this->colorTableSize];
// The lookup table is faster, but I wanted the Pedantic version.
$r = DataHandler::packUint16($this->screenLeftPos) . DataHandler::packUint16($this->screenTopPos) . DataHandler::packUint16($this->screenWidth) . DataHandler::packUint16($this->screenHeight) . chr($packedFields & 0xff);
if ($this->colorTableFlag && $this->colorTableSize > 0) {
$r .= $this->colorTable;
}
return "," . $r . $this->lzwMinCodeSize . $this->dataSubBlocks . "";
}
/**
* @return string
*/
public function encode()
{
$ctSize = BinStringStatic::_strlen($this->colorTable);
if ($ctSize > 0) {
$this->colorTableFlag = true;
$this->colorTableSize = $ctSize / 3;
} else {
$this->colorTableFlag = false;
$this->colorTableSize = 2;
}
$packedFields = 0;
$packedFields |= $this->colorTableFlag ? 0x80 : 0x0;
$packedFields |= $this->colorResolution << 4 & 0x70;
$packedFields |= $this->sortFlag ? 0x8 : 0x0;
// For just 8 possible values, the lookup table is faster.
// the commented line below is the pedantic way of doing it.
//$packedFields |= ceil(log($this->colorTableSize) / log(2)) - 1;
$packedFields |= $this->ctSizeList[$this->colorTableSize];
$r = DataHandler::packUint16($this->screenWidth) . DataHandler::packUint16($this->screenHeight) . chr($packedFields & 0xff) . chr($this->bgColorIndex) . chr($this->pixelAspectRatio == 0 ? 0 : (int) ($this->pixelAspectRatio * 64 / 15));
if ($this->colorTableFlag && $this->colorTableSize > 0) {
$r .= $this->colorTable;
}
return $r;
}
/**
* @return string
*/
public function encode()
{
return "!" . chr($this->blockLabel) . "\f" . DataHandler::packUint16($this->textGridLeftPosition) . DataHandler::packUint16($this->textGridTopPosition) . DataHandler::packUint16($this->textGridWidth) . DataHandler::packUint16($this->textGridHeight) . ord($this->characterCellWidth) . ord($this->characterCellHeight) . ord($this->textFGColorIndex) . ord($this->textBGColorIndex) . $this->dataSubBlocks . "";
}
