Файл: vendor/intervention/gif/src/Encoders/GraphicControlExtensionEncoder.php
Строк: 98
<?php
declare(strict_types=1);
namespace InterventionGifEncoders;
use InterventionGifBlocksGraphicControlExtension;
class GraphicControlExtensionEncoder extends AbstractEncoder
{
/**
* Create new instance
*
* @param GraphicControlExtension $source
*/
public function __construct(GraphicControlExtension $source)
{
$this->source = $source;
}
/**
* Encode current source
*
* @return string
*/
public function encode(): string
{
return implode('', [
GraphicControlExtension::MARKER,
GraphicControlExtension::LABEL,
GraphicControlExtension::BLOCKSIZE,
$this->encodePackedField(),
$this->encodeDelay(),
$this->encodeTransparentColorIndex(),
GraphicControlExtension::TERMINATOR,
]);
}
/**
* Encode delay time
*
* @return string
*/
protected function encodeDelay(): string
{
return pack('v*', $this->source->getDelay());
}
/**
* Encode transparent color index
*
* @return string
*/
protected function encodeTransparentColorIndex(): string
{
return pack('C', $this->source->getTransparentColorIndex());
}
/**
* Encode packed field
*
* @return string
*/
protected function encodePackedField(): string
{
return pack('C', bindec(implode('', [
str_pad('0', 3, '0', STR_PAD_LEFT),
str_pad(decbin($this->source->getDisposalMethod()->value), 3, '0', STR_PAD_LEFT),
(int) $this->source->getUserInput(),
(int) $this->source->getTransparentColorExistance(),
])));
}
}