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<?php
namespace Intervention\Image\Gd;
use Intervention\Image\Exception\NotSupportedException;
class Encoder extends \Intervention\Image\AbstractEncoder
{
/**
* Processes and returns encoded image as JPEG string
*
* @return string
*/
protected function processJpeg()
{
ob_start();
imagejpeg($this->image->getCore(), null, $this->quality);
$this->image->mime = image_type_to_mime_type(IMAGETYPE_JPEG);
$buffer = ob_get_contents();
ob_end_clean();
return $buffer;
}
/**
* Processes and returns encoded image as PNG string
*
* @return string
*/
protected function processPng()
{
ob_start();
$resource = $this->image->getCore();
imagealphablending($resource, false);
imagesavealpha($resource, true);
imagepng($resource, null, -1);
$this->image->mime = image_type_to_mime_type(IMAGETYPE_PNG);
$buffer = ob_get_contents();
ob_end_clean();
return $buffer;
}
/**
* Processes and returns encoded image as GIF string
*
* @return string
*/
protected function processGif()
{
ob_start();
imagegif($this->image->getCore());
$this->image->mime = image_type_to_mime_type(IMAGETYPE_GIF);
$buffer = ob_get_contents();
ob_end_clean();
return $buffer;
}
protected function processWebp()
{
if ( ! function_exists('imagewebp')) {
throw new NotSupportedException(
"Webp format is not supported by PHP installation."
);
}
ob_start();
imagewebp($this->image->getCore(), null, $this->quality);
$this->image->mime = defined('IMAGETYPE_WEBP') ? image_type_to_mime_type(IMAGETYPE_WEBP) : 'image/webp';
$buffer = ob_get_contents();
ob_end_clean();
return $buffer;
}
/**
* Processes and returns encoded image as TIFF string
*
* @return string
*/
protected function processTiff()
{
throw new NotSupportedException(
"TIFF format is not supported by Gd Driver."
);
}
/**
* Processes and returns encoded image as BMP string
*
* @return string
*/
protected function processBmp()
{
throw new NotSupportedException(
"BMP format is not supported by Gd Driver."
);
}
/**
* Processes and returns encoded image as ICO string
*
* @return string
*/
protected function processIco()
{
throw new NotSupportedException(
"ICO format is not supported by Gd Driver."
);
}
/**
* Processes and returns encoded image as PSD string
*
* @return string
*/
protected function processPsd()
{
throw new NotSupportedException(
"PSD format is not supported by Gd Driver."
);
}
}