FM / Image

/home/techb158/ileadtechnology.com/vendor/mpdf/mpdf/src/Image/

/home/techb158/ileadtechnology.com/vendor/mpdf/mpdf/src/Image

Name	Size	Mode	Actions
Bmp.php	7581	0644	edit dl rm
ImageProcessor.php	45056	0644	edit dl rm
ImageTypeGuesser.php	826	0644	edit dl rm
Svg.php	135103	0644	edit dl rm
Wmf.php	7263	0644	edit dl rm

Edit: /home/techb158/ileadtechnology.com/vendor/mpdf/mpdf/src/Image/ImageProcessor.php (45056B)

<?php

namespace Mpdf\Image;

use Mpdf\AssetFetcher;
use Mpdf\Cache;
use Mpdf\Color\ColorConverter;
use Mpdf\Color\ColorModeConverter;
use Mpdf\CssManager;
use Mpdf\Gif\Gif;
use Mpdf\Language\LanguageToFontInterface;
use Mpdf\Language\ScriptToLanguageInterface;
use Mpdf\Log\Context as LogContext;
use Mpdf\Mpdf;
use Mpdf\Otl;
use Mpdf\PsrLogAwareTrait\PsrLogAwareTrait;
use Mpdf\SizeConverter;
use Psr\Log\LoggerInterface;

class ImageProcessor implements \Psr\Log\LoggerAwareInterface
{

use PsrLogAwareTrait;

/**
	 * @var \Mpdf\Mpdf
	 */
	private $mpdf;

/**
	 * @var \Mpdf\Otl
	 */
	private $otl;

/**
	 * @var \Mpdf\CssManager
	 */
	private $cssManager;

/**
	 * @var \Mpdf\SizeConverter
	 */
	private $sizeConverter;

/**
	 * @var \Mpdf\Color\ColorConverter
	 */
	private $colorConverter;

/**
	 * @var \Mpdf\Color\ColorModeConverter
	 */
	private $colorModeConverter;

/**
	 * @var \Mpdf\Cache
	 */
	private $cache;

/**
	 * @var \Mpdf\Image\ImageTypeGuesser
	 */
	private $guesser;

/**
	 * @var string[]
	 */
	private $failedImages;

/**
	 * @var \Mpdf\Image\Bmp
	 */
	private $bmp;

/**
	 * @var \Mpdf\Image\Wmf
	 */
	private $wmf;

/**
	 * @var \Mpdf\Language\LanguageToFontInterface
	 */
	private $languageToFont;

/**
	 * @var \Mpdf\Language\ScriptToLanguageInterface
	 */
	public $scriptToLanguage;

/**
	 * @var \Mpdf\AssetFetcher
	 */
	private $assetFetcher;

public function __construct(
		Mpdf $mpdf,
		Otl $otl,
		CssManager $cssManager,
		SizeConverter $sizeConverter,
		ColorConverter $colorConverter,
		ColorModeConverter $colorModeConverter,
		Cache $cache,
		LanguageToFontInterface $languageToFont,
		ScriptToLanguageInterface $scriptToLanguage,
		AssetFetcher $assetFetcher,
		LoggerInterface $logger
	) {

$this->mpdf = $mpdf;
		$this->otl = $otl;
		$this->cssManager = $cssManager;
		$this->sizeConverter = $sizeConverter;
		$this->colorConverter = $colorConverter;
		$this->colorModeConverter = $colorModeConverter;
		$this->cache = $cache;
		$this->languageToFont = $languageToFont;
		$this->scriptToLanguage = $scriptToLanguage;
		$this->assetFetcher = $assetFetcher;

$this->logger = $logger;

$this->guesser = new ImageTypeGuesser();

$this->failedImages = [];
	}

public function getImage(&$file, $firstTime = true, $allowvector = true, $orig_srcpath = false, $interpolation = false)
	{
		// mPDF 6
		// firsttime i.e. whether to add to this->images - use false when calling iteratively
		// Image Data passed directly as var:varname

$type = null;
		$data = '';

if (preg_match('/var:\s*(.*)/', $file, $v)) {
			if (!isset($this->mpdf->imageVars[$v[1]])) {
				return $this->imageError($file, $firstTime, 'Unknown image variable');
			}

$data = $this->mpdf->imageVars[$v[1]];
			$file = md5($data);
		}

if (preg_match('/data:image\/(gif|jpe?g|png|webp|svg\+xml);base64,(.*)/', $file, $v)) {
			$type = $v[1];
			$data = base64_decode($v[2]);
			$file = md5($data);
		}

// mPDF 5.7.4 URLs
		if ($firstTime && $file && strpos($file, 'data:') !== 0) {
			$file = str_replace(' ', '%20', $file);
		}

if ($firstTime && $orig_srcpath) {
			// If orig_srcpath is a relative file path (and not a URL), then it needs to be URL decoded
			if (strpos($orig_srcpath, 'data:') !== 0) {
				$orig_srcpath = str_replace(' ', '%20', $orig_srcpath);
			}
			if (!preg_match('/^(http|ftp)/', $orig_srcpath)) {
				$orig_srcpath = $this->urldecodeParts($orig_srcpath);
			}
		}

if ($orig_srcpath && isset($this->mpdf->images[$orig_srcpath])) {
			$file = $orig_srcpath;
			return $this->mpdf->images[$orig_srcpath];
		}

if (isset($this->mpdf->images[$file])) {
			return $this->mpdf->images[$file];
		}

if ($orig_srcpath && isset($this->mpdf->formobjects[$orig_srcpath])) {
			$file = $orig_srcpath;
			return $this->mpdf->formobjects[$file];
		}

if (isset($this->mpdf->formobjects[$file])) {
			return $this->mpdf->formobjects[$file];
		}

if ($firstTime && isset($this->failedImages[$file])) { // Save re-trying image URL's which have already failed
			return $this->imageError($file, $firstTime, '');
		}

if (!$data) {
			try {
				$data = $this->assetFetcher->fetchDataFromPath($file, $orig_srcpath);
			} catch (\Mpdf\Exception\AssetFetchingException $e) {
				return $this->imageError($orig_srcpath, $firstTime, $e->getMessage());
			}
		}

if (!$data) {
			return $this->imageError($file, $firstTime, 'Could not find image file');
		}

if ($type === null) {
			$type = $this->guesser->guess($data);
		}

if ($type === 'svg' || $type === 'svg+xml') {
			if (!$allowvector) {
				return $this->imageError($file, $firstTime, 'SVG image file not supported in this context');
			}
			return $this->processSvg($data, $file, $firstTime);
		}

if ($type === 'wmf') {
			if (!$allowvector) {
				return $this->imageError($file, $firstTime, 'WMF image file not supported in this context');
			}
			return $this->processWmf($data, $file, $firstTime);
		}

if ($type === 'webp') {
			// Convert webp images to JPG and treat them as such
			$data = $this->processWebp($data, $file, $firstTime);
			$type = 'jpeg';
		}

// JPEG
		if ($type === 'jpeg' || $type === 'jpg') {
			return $this->processJpg($data, $file, $firstTime, $interpolation);
		}

if ($type === 'png') {
			return $this->processPng($data, $file, $firstTime, $interpolation);
		}

if ($type === 'gif') { // GIF
			return $this->processGif($data, $file, $firstTime, $interpolation);
		}

if ($type === 'bmp') {
			return $this->processBmp($data, $file, $firstTime, $interpolation);
		}

return $this->processUnknownType($data, $file, $firstTime, $interpolation);
	}

private function convertImage(&$data, $colspace, $targetcs, $w, $h, $dpi, $mask, $gamma_correction = false, $pngcolortype = false)
	{
		if (!function_exists('gd_info')) {
			return $this->imageError('', false, 'GD library needed to parse image files');
		}

if ($this->mpdf->PDFA || $this->mpdf->PDFX) {
			$mask = false;
		}

$im = @imagecreatefromstring($data);
		$info = [];
		$bpc = ord(substr($data, 24, 1));

if ($im) {
			$imgdata = '';
			$mimgdata = '';
			$minfo = [];

// mPDF 6 Gamma correction
			// Need to extract alpha channel info before imagegammacorrect (which loses the data)
			if ($mask) { // i.e. $pngalpha for PNG
				// mPDF 6
				if ($colspace === 'Indexed') { // generate Alpha channel values from tRNS - only from PNG
					//Read transparency info
					$transparency = '';
					$p = strpos($data, 'tRNS');
					if ($p) {
						$n = $this->fourBytesToInt(substr($data, $p - 4, 4));
						$transparency = substr($data, $p + 4, $n);
						// ord($transparency[$index]) = the alpha value for that index
						// generate alpha channel
						for ($ypx = 0; $ypx < $h; ++$ypx) {
							for ($xpx = 0; $xpx < $w; ++$xpx) {
								$colorindex = imagecolorat($im, $xpx, $ypx);
								if ($colorindex >= $n) {
									$alpha = 255;
								} else {
									$alpha = ord($transparency[$colorindex]);
								} // 0-255
								$mimgdata .= chr($alpha);
							}
						}
					}
				} elseif ($pngcolortype === 0 || $pngcolortype === 2) { // generate Alpha channel values from tRNS
					// Get transparency as array of RGB
					$p = strpos($data, 'tRNS');
					if ($p) {
						$trns = '';
						$n = $this->fourBytesToInt(substr($data, $p - 4, 4));
						$t = substr($data, $p + 4, $n);
						if ($colspace === 'DeviceGray') {  // ct===0
							$trns = [$this->translateValue(substr($t, 0, 2), $bpc)];
						} else /* $colspace=='DeviceRGB' */ {  // ct==2
							$trns = [];
							$trns[0] = $this->translateValue(substr($t, 0, 2), $bpc);
							$trns[1] = $this->translateValue(substr($t, 2, 2), $bpc);
							$trns[2] = $this->translateValue(substr($t, 4, 2), $bpc);
						}

// generate alpha channel
						for ($ypx = 0; $ypx < $h; ++$ypx) {
							for ($xpx = 0; $xpx < $w; ++$xpx) {
								$rgb = imagecolorat($im, $xpx, $ypx);
								$r = ($rgb >> 16) & 0xFF;
								$g = ($rgb >> 8) & 0xFF;
								$b = $rgb & 0xFF;
								if ($colspace === 'DeviceGray' && $b == $trns[0]) {
									$alpha = 0;
								} elseif ($r == $trns[0] && $g == $trns[1] && $b == $trns[2]) {
									$alpha = 0;
								} // ct==2
								else {
									$alpha = 255;
								}
								$mimgdata .= chr($alpha);
							}
						}
					}
				} else {
					for ($i = 0; $i < $h; $i++) {
						for ($j = 0; $j < $w; $j++) {
							$rgb = imagecolorat($im, $j, $i);
							$alpha = ($rgb & 0x7F000000) >> 24;
							if ($alpha < 127) {
								$mimgdata .= chr(255 - ($alpha * 2));
							} else {
								$mimgdata .= chr(0);
							}
						}
					}
				}
			}

// mPDF 6 Gamma correction
			if ($gamma_correction) {
				imagegammacorrect($im, $gamma_correction, 2.2);
			}

// Read transparency info
			$trns = [];
			$trnsrgb = false;
			if (!$this->mpdf->PDFA && !$this->mpdf->PDFX && !$mask) {  // mPDF 6 added NOT mask
				$p = strpos($data, 'tRNS');
				if ($p) {
					$n = $this->fourBytesToInt(substr($data, ($p - 4), 4));
					$t = substr($data, $p + 4, $n);
					if ($colspace === 'DeviceGray') {  // ct===0
						$trns = [$this->translateValue(substr($t, 0, 2), $bpc)];
					} elseif ($colspace === 'DeviceRGB') {  // ct==2
						$trns[0] = $this->translateValue(substr($t, 0, 2), $bpc);
						$trns[1] = $this->translateValue(substr($t, 2, 2), $bpc);
						$trns[2] = $this->translateValue(substr($t, 4, 2), $bpc);
						$trnsrgb = $trns;
						if ($targetcs === 'DeviceCMYK') {
							$col = $this->colorModeConverter->rgb2cmyk([3, $trns[0], $trns[1], $trns[2]]);
							$c1 = (int) ($col[1] * 2.55);
							$c2 = (int) ($col[2] * 2.55);
							$c3 = (int) ($col[3] * 2.55);
							$c4 = (int) ($col[4] * 2.55);
							$trns = [$c1, $c2, $c3, $c4];
						} elseif ($targetcs === 'DeviceGray') {
							$c = (int) (($trns[0] * .21) + ($trns[1] * .71) + ($trns[2] * .07));
							$trns = [$c];
						}
					} else { // Indexed
						$pos = strpos($t, chr(0));
						if (is_int($pos)) {
							$pal = imagecolorsforindex($im, $pos);
							$r = $pal['red'];
							$g = $pal['green'];
							$b = $pal['blue'];
							$trns = [$r, $g, $b]; // ****
							$trnsrgb = $trns;
							if ($targetcs === 'DeviceCMYK') {
								$col = $this->colorModeConverter->rgb2cmyk([3, $r, $g, $b]);
								$c1 = (int) ($col[1] * 2.55);
								$c2 = (int) ($col[2] * 2.55);
								$c3 = (int) ($col[3] * 2.55);
								$c4 = (int) ($col[4] * 2.55);
								$trns = [$c1, $c2, $c3, $c4];
							} elseif ($targetcs === 'DeviceGray') {
								$c = (int) (($r * .21) + ($g * .71) + ($b * .07));
								$trns = [$c];
							}
						}
					}
				}
			}

for ($i = 0; $i < $h; $i++) {
				for ($j = 0; $j < $w; $j++) {
					$rgb = imagecolorat($im, $j, $i);
					$r = ($rgb >> 16) & 0xFF;
					$g = ($rgb >> 8) & 0xFF;
					$b = $rgb & 0xFF;
					if ($colspace === 'Indexed') {
						$pal = imagecolorsforindex($im, $rgb);
						$r = $pal['red'];
						$g = $pal['green'];
						$b = $pal['blue'];
					}

if ($targetcs === 'DeviceCMYK') {
						$col = $this->colorModeConverter->rgb2cmyk([3, $r, $g, $b]);
						$c1 = (int) ($col[1] * 2.55);
						$c2 = (int) ($col[2] * 2.55);
						$c3 = (int) ($col[3] * 2.55);
						$c4 = (int) ($col[4] * 2.55);
						if ($trnsrgb) {
							// original pixel was not set as transparent but processed color does match
							if ($trnsrgb !== [$r, $g, $b] && $trns === [$c1, $c2, $c3, $c4]) {
								if ($c4 === 0) {
									$c4 = 1;
								} else {
									$c4--;
								}
							}
						}
						$imgdata .= chr($c1) . chr($c2) . chr($c3) . chr($c4);
					} elseif ($targetcs === 'DeviceGray') {
						$c = (int) (($r * .21) + ($g * .71) + ($b * .07));
						if ($trnsrgb) {
							// original pixel was not set as transparent but processed color does match
							if ($trnsrgb !== [$r, $g, $b] && $trns === [$c]) {
								if ($c === 0) {
									$c = 1;
								} else {
									$c--;
								}
							}
						}
						$imgdata .= chr($c);
					} elseif ($targetcs === 'DeviceRGB') {
						$imgdata .= chr($r) . chr($g) . chr($b);
					}
				}
			}

if ($targetcs === 'DeviceGray') {
				$ncols = 1;
			} elseif ($targetcs === 'DeviceRGB') {
				$ncols = 3;
			} elseif ($targetcs === 'DeviceCMYK') {
				$ncols = 4;
			}

$imgdata = $this->gzCompress($imgdata);
			$info = ['w' => $w, 'h' => $h, 'cs' => $targetcs, 'bpc' => 8, 'f' => 'FlateDecode', 'data' => $imgdata, 'type' => 'png',
				'parms' => '/DecodeParms <</Colors ' . $ncols . ' /BitsPerComponent 8 /Columns ' . $w . '>>'];
			if ($dpi) {
				$info['set-dpi'] = $dpi;
			}
			if ($mask) {
				$mimgdata = $this->gzCompress($mimgdata);
				$minfo = ['w' => $w, 'h' => $h, 'cs' => 'DeviceGray', 'bpc' => 8, 'f' => 'FlateDecode', 'data' => $mimgdata, 'type' => 'png',
					'parms' => '/DecodeParms <</Colors ' . $ncols . ' /BitsPerComponent 8 /Columns ' . $w . '>>'];
				if ($dpi) {
					$minfo['set-dpi'] = $dpi;
				}
				$tempfile = '_tempImgPNG' . md5($data) . random_int(1, 10000) . '.png';
				$imgmask = count($this->mpdf->images) + 1;
				$minfo['i'] = $imgmask;
				$this->mpdf->images[$tempfile] = $minfo;
				$info['masked'] = $imgmask;
			} elseif ($trns) {
				$info['trns'] = $trns;
			}

imagedestroy($im);
		}
		return $info;
	}

private function jpgHeaderFromString(&$data)
	{
		$p = 4;
		$p += $this->twoBytesToInt(substr($data, $p, 2)); // Length of initial marker block
		$marker = substr($data, $p, 2);

while ($marker !== chr(255) . chr(192) && $marker !== chr(255) . chr(194)  && $marker !== chr(255) . chr(193) && $p < strlen($data)) {
			// Start of frame marker (FFC0) (FFC1) or (FFC2)
			$p += $this->twoBytesToInt(substr($data, $p + 2, 2)) + 2; // Length of marker block
			$marker = substr($data, $p, 2);
		}

if ($marker !== chr(255) . chr(192) && $marker !== chr(255) . chr(194) && $marker !== chr(255) . chr(193)) {
			return false;
		}

return substr($data, $p + 2, 10);
	}

private function jpgDataFromHeader($hdr)
	{
		$bpc = ord(substr($hdr, 2, 1));

if (!$bpc) {
			$bpc = 8;
		}

$h = $this->twoBytesToInt(substr($hdr, 3, 2));
		$w = $this->twoBytesToInt(substr($hdr, 5, 2));

$channels = ord(substr($hdr, 7, 1));

if ($channels === 3) {
			$colspace = 'DeviceRGB';
		} elseif ($channels === 4) {
			$colspace = 'DeviceCMYK';
		} else {
			$colspace = 'DeviceGray';
		}

return [$w, $h, $colspace, $bpc, $channels];
	}

/**
	 * Corrects 2-byte integer to 8-bit depth value
	 * If original image is bpc != 8, tRNS will be in this bpc
	 * $im from imagecreatefromstring will always be in bpc=8
	 * So why do we only need to correct 16-bit tRNS and NOT 2 or 4-bit???
	 */
	private function translateValue($s, $bpc)
	{
		$n = $this->twoBytesToInt($s);

if ($bpc == 16) {
			$n = ($n >> 8);
		}

//elseif ($bpc==4) { $n = ($n << 2); }
		//elseif ($bpc==2) { $n = ($n << 4); }

return $n;
	}

/**
	 * Read a 4-byte integer from string
	 */
	private function fourBytesToInt($s)
	{
		return (ord($s[0]) << 24) + (ord($s[1]) << 16) + (ord($s[2]) << 8) + ord($s[3]);
	}

/**
	 * Equivalent to _get_ushort
	 * Read a 2-byte integer from string
	 */
	private function twoBytesToInt($s)
	{
		return (ord(substr($s, 0, 1)) << 8) + ord(substr($s, 1, 1));
	}

private function gzCompress($data)
	{
		if (!function_exists('gzcompress')) {
			throw new \Mpdf\MpdfException('gzcompress is not available. install ext-zlib extension.');
		}

return gzcompress($data);
	}

/**
	 * Throw an exception and save re-trying image URL's which have already failed
	 */
	private function imageError($file, $firstTime, $msg)
	{
		$this->failedImages[$file] = true;

if ($firstTime && ($this->mpdf->showImageErrors || $this->mpdf->debug)) {
			throw new \Mpdf\MpdfImageException(sprintf('%s (%s)', $msg, substr($file, 0, 256)));
		}

$this->logger->warning(sprintf('%s (%s)', $msg, $file), ['context' => LogContext::IMAGES]);
	}

/**
	 * @since mPDF 5.7.4
	 * @param string $url
	 * @return string
	 */
	private function urldecodeParts($url)
	{
		$file = $url;
		$query = '';
		if (preg_match('/[?]/', $url)) {
			$bits = preg_split('/[?]/', $url, 2);
			$file = $bits[0];
			$query = '?' . $bits[1];
		}
		$file = rawurldecode($file);
		$query = urldecode($query);

return $file . $query;
	}

public function processJpg($data, $file, $firstTime, $interpolation)
	{
		$ppUx = 0;

$hdr = $this->jpgHeaderFromString($data);
		if (!$hdr) {
			return $this->imageError($file, $firstTime, 'Error parsing JPG header');
		}

$a = $this->jpgDataFromHeader($hdr);
		$channels = (int) $a[4];
		$j = strpos($data, 'JFIF');

if ($j) {
			// Read resolution
			$unitSp = ord(substr($data, $j + 7, 1));
			if ($unitSp > 0) {
				$ppUx = $this->twoBytesToInt(substr($data, $j + 8, 2)); // horizontal pixels per meter, usually set to zero
				if ($unitSp === 2) { // = dots per cm (if == 1 set as dpi)
					$ppUx = round($ppUx / 10 * 25.4);
				}
			}
		}

if ($a[2] === 'DeviceCMYK' && ($this->mpdf->restrictColorSpace === 2 || ($this->mpdf->PDFA && $this->mpdf->restrictColorSpace !== 3))) {

// convert to RGB image
			if (!function_exists('gd_info')) {
				throw new \Mpdf\MpdfException(sprintf('JPG image may not use CMYK color space (%s).', $file));
			}

if ($this->mpdf->PDFA && !$this->mpdf->PDFAauto) {
				$this->mpdf->PDFAXwarnings[] = sprintf('JPG image "%s" may not use CMYK color space. Image converted to RGB. The colour profile was altered', $file);
			}

$im = @imagecreatefromstring($data);

if ($im) {

$tempfile = $this->cache->tempFilename('_tempImgPNG' . md5($file) . random_int(1, 10000) . '.png');
				imageinterlace($im, false);

$check = @imagepng($im, $tempfile);
				if (!$check) {
					return $this->imageError($file, $firstTime, sprintf('Error creating temporary file "%s" when using GD library to parse JPG (CMYK) image', $tempfile));
				}

// $info = $this->getImage($tempfile, false);

$data = file_get_contents($tempfile);
				$info = $this->processPng($data, $tempfile, false, $interpolation);

if (!$info) {
					return $this->imageError($file, $firstTime, sprintf('Error parsing temporary file "%s" created with GD library to parse JPG (CMYK) image', $tempfile));
				}

imagedestroy($im);
				unlink($tempfile);

$info['type'] = 'jpg';
				if ($firstTime) {
					$info['i'] = count($this->mpdf->images) + 1;
					$info['interpolation'] = $interpolation; // mPDF 6
					$this->mpdf->images[$file] = $info;
				}

return $info;
			}

return $this->imageError($file, $firstTime, 'Error creating GD image file from JPG(CMYK) image');
		}

if ($a[2] === 'DeviceRGB' && ($this->mpdf->PDFX || $this->mpdf->restrictColorSpace === 3)) {
			// Convert to CMYK image stream - nominally returned as type='png'
			$info = $this->convertImage($data, $a[2], 'DeviceCMYK', $a[0], $a[1], $ppUx, false);
			if (($this->mpdf->PDFA && !$this->mpdf->PDFAauto) || ($this->mpdf->PDFX && !$this->mpdf->PDFXauto)) {
				$this->mpdf->PDFAXwarnings[] = sprintf('JPG image may not use RGB color space - %s - (Image converted to CMYK. NB This will alter the colour profile of the image.)', $file);
			}

} elseif (($a[2] === 'DeviceRGB' || $a[2] === 'DeviceCMYK') && $this->mpdf->restrictColorSpace === 1) {
			// Convert to Grayscale image stream - nominally returned as type='png'
			$info = $this->convertImage($data, $a[2], 'DeviceGray', $a[0], $a[1], $ppUx, false);

} else {
			// mPDF 6 Detect Adobe APP14 Tag
			//$pos = strpos($data, "\xFF\xEE\x00\x0EAdobe\0");
			//if ($pos !== false) {
			//}
			// mPDF 6 ICC profile
			$offset = 0;
			$icc = [];
			while (($pos = strpos($data, "ICC_PROFILE\0", $offset)) !== false) {
				// get ICC sequence length
				$length = $this->twoBytesToInt(substr($data, $pos - 2, 2)) - 16;
				$sn = max(1, ord($data[$pos + 12]));
				$nom = max(1, ord($data[$pos + 13]));
				$icc[$sn - 1] = substr($data, $pos + 14, $length);
				$offset = ($pos + 14 + $length);
			}
			// order and compact ICC segments
			if (count($icc) > 0) {
				ksort($icc);
				$icc = implode('', $icc);
				if (substr($icc, 36, 4) !== 'acsp') {
					// invalid ICC profile
					$icc = false;
				}
				$input = substr($icc, 16, 4);
				$output = substr($icc, 20, 4);
				// Ignore Color profiles for conversion to other colorspaces e.g. CMYK/Lab
				if ($input !== 'RGB ' || $output !== 'XYZ ') {
					$icc = false;
				}
			} else {
				$icc = false;
			}

$info = ['w' => $a[0], 'h' => $a[1], 'cs' => $a[2], 'bpc' => $a[3], 'f' => 'DCTDecode', 'data' => $data, 'type' => 'jpg', 'ch' => $channels, 'icc' => $icc];
			if ($ppUx) {
				$info['set-dpi'] = $ppUx;
			}
		}

if (!$info) {
			return $this->imageError($file, $firstTime, 'Error parsing or converting JPG image');
		}

if ($firstTime) {
			$info['i'] = count($this->mpdf->images) + 1;
			$info['interpolation'] = $interpolation; // mPDF 6
			$this->mpdf->images[$file] = $info;
		}

return $info;
	}

public function processPng($data, $file, $firstTime, $interpolation)
	{
		$ppUx = 0;

// Check signature
		if (strpos($data, chr(137) . 'PNG' . chr(13) . chr(10) . chr(26) . chr(10)) !== 0) {
			return $this->imageError($file, $firstTime, 'Error parsing PNG identifier');
		}

// Read header chunk
		if (substr($data, 12, 4) !== 'IHDR') {
			return $this->imageError($file, $firstTime, 'Incorrect PNG file (no IHDR block found)');
		}

$w = $this->fourBytesToInt(substr($data, 16, 4));
		$h = $this->fourBytesToInt(substr($data, 20, 4));
		$bpc = ord(substr($data, 24, 1));
		$errpng = false;
		$pngalpha = false;
		$channels = 0;

//	if($bpc>8) { $errpng = 'not 8-bit depth'; }	// mPDF 6 Allow through to be handled as native PNG
		$ct = ord(substr($data, 25, 1));

if ($ct === 0) {
			$colspace = 'DeviceGray';
			$channels = 1;
		} elseif ($ct === 2) {
			$colspace = 'DeviceRGB';
			$channels = 3;
		} elseif ($ct === 3) {
			$colspace = 'Indexed';
			$channels = 1;
		} elseif ($ct === 4) {
			$colspace = 'DeviceGray';
			$channels = 1;
			$errpng = 'alpha channel';
			$pngalpha = true;
		} else {
			$colspace = 'DeviceRGB';
			$channels = 3;
			$errpng = 'alpha channel';
			$pngalpha = true;
		}

if ($ct < 4 && strpos($data, 'tRNS') !== false) {
			$errpng = 'transparency';
			$pngalpha = true;
		} // mPDF 6

if ($ct === 3 && strpos($data, 'iCCP') !== false) {
			$errpng = 'indexed plus ICC';
		} // mPDF 6

// $pngalpha is used as a FLAG of any kind of transparency which COULD be tranferred to an alpha channel
		// incl. single-color tarnsparency, depending which type of handling occurs later
		if (ord(substr($data, 26, 1)) !== 0) {
			$errpng = 'compression method';
		} // only 0 should be specified

if (ord(substr($data, 27, 1)) !== 0) {
			$errpng = 'filter method';
		} // only 0 should be specified

if (ord(substr($data, 28, 1)) !== 0) {
			$errpng = 'interlaced file';
		}

$j = strpos($data, 'pHYs');
		if ($j) {
			//Read resolution
			$unitSp = ord(substr($data, $j + 12, 1));
			if ($unitSp === 1) {
				$ppUx = $this->fourBytesToInt(substr($data, $j + 4, 4)); // horizontal pixels per meter, usually set to zero
				$ppUx = round($ppUx / 1000 * 25.4);
			}
		}

// mPDF 6 Gamma correction
		$gamma = 0;
		$gAMA = 0;
		$j = strpos($data, 'gAMA');
		if ($j && strpos($data, 'sRGB') === false) { // sRGB colorspace - overrides gAMA
			$gAMA = $this->fourBytesToInt(substr($data, $j + 4, 4)); // Gamma value times 100000
			$gAMA /= 100000;

// http://www.libpng.org/pub/png/spec/1.2/PNG-Encoders.html
			// "If the source file's gamma value is greater than 1.0, it is probably a display system exponent,..."
			// ("..and you should use its reciprocal for the PNG gamma.")
			//if ($gAMA > 1) { $gAMA = 1/$gAMA; }
			// (Some) Applications seem to ignore it... appearing how it was probably intended
			// Test Case - image(s) on http://www.w3.org/TR/CSS21/intro.html  - PNG has gAMA set as 1.45454
			// Probably unintentional as mentioned above and should be 0.45454 which is 1 / 2.2
			// Tested on Windows PC
			// Firefox and Opera display gray as 234 (correct, but looks wrong)
			// IE9 and Safari display gray as 193 (incorrect but looks right)
			// See test different gamma chunks at http://www.libpng.org/pub/png/pngsuite-all-good.html
		}

if ($gAMA) {
			$gamma = 1 / $gAMA;
		}

// Don't need to apply gamma correction if == default i.e. 2.2
		if ($gamma > 2.15 && $gamma < 2.25) {
			$gamma = 0;
		}

// NOT supported at present
		//$j = strpos($data,'sRGB');	// sRGB colorspace - overrides gAMA
		//$j = strpos($data,'cHRM');	// Chromaticity and Whitepoint
		// $firstTime added mPDF 6 so when PNG Grayscale with alpha using resrtictcolorspace to CMYK
		// the alpha channel is sent through as secondtime as Indexed and should not be converted to CMYK
		if ($firstTime && ($colspace === 'DeviceRGB' || $colspace === 'Indexed') && ($this->mpdf->PDFX || $this->mpdf->restrictColorSpace === 3)) {

// Convert to CMYK image stream - nominally returned as type='png'
			$info = $this->convertImage($data, $colspace, 'DeviceCMYK', $w, $h, $ppUx, $pngalpha, $gamma, $ct); // mPDF 5.7.2 Gamma correction
			if (($this->mpdf->PDFA && !$this->mpdf->PDFAauto) || ($this->mpdf->PDFX && !$this->mpdf->PDFXauto)) {
				$this->mpdf->PDFAXwarnings[] = sprintf('PNG image may not use RGB color space - %s - (Image converted to CMYK. NB This will alter the colour profile of the image.)', $file);
			}

} elseif ($firstTime && ($colspace === 'DeviceRGB' || $colspace === 'Indexed') && $this->mpdf->restrictColorSpace === 1) {

// $firstTime added mPDF 6 so when PNG Grayscale with alpha using resrtictcolorspace to CMYK
			// the alpha channel is sent through as secondtime as Indexed and should not be converted to CMYK
			// Convert to Grayscale image stream - nominally returned as type='png'
			$info = $this->convertImage($data, $colspace, 'DeviceGray', $w, $h, $ppUx, $pngalpha, $gamma, $ct); // mPDF 5.7.2 Gamma correction

} elseif (($this->mpdf->PDFA || $this->mpdf->PDFX) && $pngalpha) {

// Remove alpha channel
			if ($this->mpdf->restrictColorSpace === 1) { // Grayscale
				$info = $this->convertImage($data, $colspace, 'DeviceGray', $w, $h, $ppUx, $pngalpha, $gamma, $ct); // mPDF 5.7.2 Gamma correction
			} elseif ($this->mpdf->restrictColorSpace === 3) { // CMYK
				$info = $this->convertImage($data, $colspace, 'DeviceCMYK', $w, $h, $ppUx, $pngalpha, $gamma, $ct); // mPDF 5.7.2 Gamma correction
			} elseif ($this->mpdf->PDFA) { // RGB
				$info = $this->convertImage($data, $colspace, 'DeviceRGB', $w, $h, $ppUx, $pngalpha, $gamma, $ct); // mPDF 5.7.2 Gamma correction
			}
			if (($this->mpdf->PDFA && !$this->mpdf->PDFAauto) || ($this->mpdf->PDFX && !$this->mpdf->PDFXauto)) {
				$this->mpdf->PDFAXwarnings[] = sprintf('Transparency (alpha channel) not permitted in PDFA or PDFX files - %s - (Image converted to one without transparency.)', $file);
			}

} elseif ($firstTime && ($errpng || $pngalpha || $gamma)) { // mPDF 5.7.2 Gamma correction

$gd = function_exists('gd_info') ? gd_info() : [];
			if (!isset($gd['PNG Support'])) {
				return $this->imageError($file, $firstTime, sprintf('GD library with PNG support required for image (%s)', $errpng));
			}

$im = @imagecreatefromstring($data);
			if (!$im) {
				return $this->imageError($file, $firstTime, sprintf('Error creating GD image from PNG file (%s)', $errpng));
			}

$w = imagesx($im);
			$h = imagesy($im);

$tempfile =  $this->cache->tempFilename('_tempImgPNG' . md5($file) . random_int(1, 10000) . '.png');

// Alpha channel set (including using tRNS for Paletted images)
			if ($pngalpha) {
				if ($this->mpdf->PDFA) {
					throw new \Mpdf\MpdfException(sprintf('PDFA1-b does not permit images with alpha channel transparency (%s).', $file));
				}

$imgalpha = imagecreate($w, $h);
				// generate gray scale pallete
				for ($c = 0; $c < 256; ++$c) {
					imagecolorallocate($imgalpha, $c, $c, $c);
				}

// mPDF 6
				if ($colspace === 'Indexed') { // generate Alpha channel values from tRNS
					// Read transparency info
					$p = strpos($data, 'tRNS');
					if ($p) {
						$n = $this->fourBytesToInt(substr($data, $p - 4, 4));
						$transparency = substr($data, $p + 4, $n);
						// ord($transparency[$index]) = the alpha value for that index
						// generate alpha channel
						for ($ypx = 0; $ypx < $h; ++$ypx) {
							for ($xpx = 0; $xpx < $w; ++$xpx) {
								$colorindex = imagecolorat($im, $xpx, $ypx);
								if ($colorindex >= $n) {
									$alpha = 255;
								} else {
									$alpha = ord($transparency[$colorindex]);
								} // 0-255
								if ($alpha > 0) {
									imagesetpixel($imgalpha, $xpx, $ypx, $alpha);
								}
							}
						}
					}
				} elseif ($ct === 0 || $ct === 2) { // generate Alpha channel values from tRNS
					// Get transparency as array of RGB
					$p = strpos($data, 'tRNS');
					if ($p) {
						$trns = '';
						$n = $this->fourBytesToInt(substr($data, $p - 4, 4));
						$t = substr($data, $p + 4, $n);
						if ($colspace === 'DeviceGray') {  // ct===0
							$trns = [$this->translateValue(substr($t, 0, 2), $bpc)];
						} else /* $colspace=='DeviceRGB' */ {  // ct==2
							$trns = [];
							$trns[0] = $this->translateValue(substr($t, 0, 2), $bpc);
							$trns[1] = $this->translateValue(substr($t, 2, 2), $bpc);
							$trns[2] = $this->translateValue(substr($t, 4, 2), $bpc);
						}

// generate alpha channel
						for ($ypx = 0; $ypx < $h; ++$ypx) {
							for ($xpx = 0; $xpx < $w; ++$xpx) {
								$rgb = imagecolorat($im, $xpx, $ypx);
								$r = ($rgb >> 16) & 0xFF;
								$g = ($rgb >> 8) & 0xFF;
								$b = $rgb & 0xFF;
								if ($colspace === 'DeviceGray' && $b == $trns[0]) {
									$alpha = 0;
								} elseif ($r == $trns[0] && $g == $trns[1] && $b == $trns[2]) {
									$alpha = 0;
								} else { // ct==2
									$alpha = 255;
								}
								if ($alpha > 0) {
									imagesetpixel($imgalpha, $xpx, $ypx, $alpha);
								}
							}
						}
					}
				} else {
					// extract alpha channel
					for ($ypx = 0; $ypx < $h; ++$ypx) {
						for ($xpx = 0; $xpx < $w; ++$xpx) {
							$alpha = (imagecolorat($im, $xpx, $ypx) & 0x7F000000) >> 24;
							if ($alpha < 127) {
								imagesetpixel($imgalpha, $xpx, $ypx, 255 - ($alpha * 2));
							}
						}
					}
				}

// NB This must happen after the Alpha channel is extracted
				// imagegammacorrect() removes the alpha channel data in $im - (I think this is a bug in PHP)
				if ($gamma) {
					imagegammacorrect($im, $gamma, 2.2);
				}

$tempfile_alpha =  $this->cache->tempFilename('_tempMskPNG' . md5($file) . random_int(1, 10000) . '.png');

$check = @imagepng($imgalpha, $tempfile_alpha);

if (!$check) {
					return $this->imageError($file, $firstTime, 'Failed to create temporary image file (' . $tempfile_alpha . ') parsing PNG image with alpha channel (' . $errpng . ')');
				}

imagedestroy($imgalpha);
				// extract image without alpha channel
				$imgplain = imagecreatetruecolor($w, $h);
				imagealphablending($imgplain, false); // mPDF 5.7.2
				imagecopy($imgplain, $im, 0, 0, 0, 0, $w, $h);

// create temp image file
				$check = @imagepng($imgplain, $tempfile);
				if (!$check) {
					return $this->imageError($file, $firstTime, 'Failed to create temporary image file (' . $tempfile . ') parsing PNG image with alpha channel (' . $errpng . ')');
				}

imagedestroy($imgplain);

// embed mask image
				//$minfo = $this->getImage($tempfile_alpha, false);
				$data = file_get_contents($tempfile_alpha);
				$minfo = $this->processPng($data, $tempfile_alpha, false, $interpolation);

unlink($tempfile_alpha);

if (!$minfo) {
					return $this->imageError($file, $firstTime, 'Error parsing temporary file (' . $tempfile_alpha . ') created with GD library to parse PNG image');
				}

$imgmask = count($this->mpdf->images) + 1;
				$minfo['cs'] = 'DeviceGray';
				$minfo['i'] = $imgmask;
				$this->mpdf->images[$tempfile_alpha] = $minfo;
				// embed image, masked with previously embedded mask

// $info = $this->getImage($tempfile, false);
				$data = file_get_contents($tempfile);
				$info = $this->processPng($data, $tempfile, false, $interpolation);

unlink($tempfile);

if (!$info) {
					return $this->imageError($file, $firstTime, 'Error parsing temporary file (' . $tempfile . ') created with GD library to parse PNG image');
				}

$info['masked'] = $imgmask;
				if ($ppUx) {
					$info['set-dpi'] = $ppUx;
				}
				$info['type'] = 'png';
				if ($firstTime) {
					$info['i'] = count($this->mpdf->images) + 1;
					$info['interpolation'] = $interpolation; // mPDF 6
					$this->mpdf->images[$file] = $info;
				}

return $info;
			}

// No alpha/transparency set (but cannot read directly because e.g. bit-depth != 8, interlaced etc)
			// ICC profile
			$icc = false;
			$p = strpos($data, 'iCCP');
			if ($p && $colspace === "Indexed") { // Cannot have ICC profile and Indexed together
				$p += 4;
				$n = $this->fourBytesToInt(substr($data, ($p - 8), 4));
				$nullsep = strpos(substr($data, $p, 80), chr(0));
				$icc = substr($data, ($p + $nullsep + 2), ($n - ($nullsep + 2)));
				$icc = @gzuncompress($icc); // Ignored if fails
				if ($icc) {
					if (substr($icc, 36, 4) !== 'acsp') {
						$icc = false;
					} // invalid ICC profile
					else {
						$input = substr($icc, 16, 4);
						$output = substr($icc, 20, 4);
						// Ignore Color profiles for conversion to other colorspaces e.g. CMYK/Lab
						if ($input !== 'RGB ' || $output !== 'XYZ ') {
							$icc = false;
						}
					}
				}
				// Convert to RGB colorspace so can use ICC Profile
				if ($icc) {
					imagepalettetotruecolor($im);
					$colspace = 'DeviceRGB';
					$channels = 3;
				}
			}

if ($gamma) {
				imagegammacorrect($im, $gamma, 2.2);
			}

imagealphablending($im, false);
			imagesavealpha($im, false);
			imageinterlace($im, false);

$check = @imagepng($im, $tempfile);
			if (!$check) {
				return $this->imageError($file, $firstTime, 'Failed to create temporary image file (' . $tempfile . ') parsing PNG image (' . $errpng . ')');
			}

imagedestroy($im);
			// $info = $this->getImage($tempfile, false);
			$data = file_get_contents($tempfile);
			$info = $this->processPng($data, $tempfile, false, $interpolation);
			unlink($tempfile);

if (!$info) {
				return $this->imageError($file, $firstTime, 'Error parsing temporary file (' . $tempfile . ') created with GD library to parse PNG image');
			}

if ($ppUx) {
				$info['set-dpi'] = $ppUx;
			}
			$info['type'] = 'png';
			if ($firstTime) {
				$info['i'] = count($this->mpdf->images) + 1;
				$info['interpolation'] = $interpolation; // mPDF 6
				if ($icc) {
					$info['ch'] = $channels;
					$info['icc'] = $icc;
				}
				$this->mpdf->images[$file] = $info;
			}

return $info;

} else { // PNG image with no need to convert alph channels, bpc <> 8 etc.

$parms = '/DecodeParms <</Predictor 15 /Colors ' . $channels . ' /BitsPerComponent ' . $bpc . ' /Columns ' . $w . '>>';
			//Scan chunks looking for palette, transparency and image data
			$pal = '';
			$trns = '';
			$pngdata = '';
			$icc = false;
			$p = 33;

do {
				$n = $this->fourBytesToInt(substr($data, $p, 4));
				$p += 4;
				$type = substr($data, $p, 4);
				$p += 4;
				if ($type === 'PLTE') {
					//Read palette
					$pal = substr($data, $p, $n);
					$p += $n;
					$p += 4;
				} elseif ($type === 'tRNS') {
					//Read transparency info
					$t = substr($data, $p, $n);
					$p += $n;
					if ($ct === 0) {
						$trns = [ord(substr($t, 1, 1))];
					} elseif ($ct === 2) {
						$trns = [ord(substr($t, 1, 1)), ord(substr($t, 3, 1)), ord(substr($t, 5, 1))];
					} else {
						$pos = strpos($t, chr(0));
						if (is_int($pos)) {
							$trns = [$pos];
						}
					}
					$p += 4;
				} elseif ($type === 'IDAT') {
					$pngdata.=substr($data, $p, $n);
					$p += $n;
					$p += 4;
				} elseif ($type === 'iCCP') {
					$nullsep = strpos(substr($data, $p, 80), chr(0));
					$icc = substr($data, $p + $nullsep + 2, $n - ($nullsep + 2));
					$icc = @gzuncompress($icc); // Ignored if fails
					if ($icc) {
						if (substr($icc, 36, 4) !== 'acsp') {
							$icc = false;
						} // invalid ICC profile
						else {
							$input = substr($icc, 16, 4);
							$output = substr($icc, 20, 4);
							// Ignore Color profiles for conversion to other colorspaces e.g. CMYK/Lab
							if ($input !== 'RGB ' || $output !== 'XYZ ') {
								$icc = false;
							}
						}
					}
					$p += $n;
					$p += 4;
				} elseif ($type === 'IEND') {
					break;
				} elseif (preg_match('/[a-zA-Z]{4}/', $type)) {
					$p += $n + 4;
				} else {
					return $this->imageError($file, $firstTime, 'Error parsing PNG image data');
				}

} while ($n);

if (!$pngdata) {
				return $this->imageError($file, $firstTime, 'Error parsing PNG image data - no IDAT data found');
			}

if ($colspace === 'Indexed' && empty($pal)) {
				return $this->imageError($file, $firstTime, 'Error parsing PNG image data - missing colour palette');
			}

// mPDF 6 cannot have ICC profile and Indexed in a PDF document as both use the colorspace tag.
			if ($colspace === 'Indexed' && $icc) {
				$icc = false;
			}

$info = [
				'w' => $w,
				'h' => $h,
				'cs' => $colspace,
				'bpc' => $bpc,
				'f' => 'FlateDecode',
				'parms' => $parms,
				'pal' => $pal,
				'trns' => $trns,
				'data' => $pngdata,
				'ch' => $channels,
				'icc' => $icc
			];

$info['type'] = 'png';

if ($ppUx) {
				$info['set-dpi'] = $ppUx;
			}
		}

if (!$info) {
			return $this->imageError($file, $firstTime, 'Error parsing or converting PNG image');
		}

if ($firstTime) {
			$info['i'] = count($this->mpdf->images) + 1;
			$info['interpolation'] = $interpolation; // mPDF 6
			$this->mpdf->images[$file] = $info;
		}

return $info;
	}

public function processWebp($data, $file, $firstTime)
	{
		$im = @imagecreatefromstring($data);

if (!function_exists('imagewebp') || false === $im) {
			return $this->imageError($file, $firstTime, 'Missing GD support for WEBP images.');
		}

$tempfile = $this->cache->tempFilename('_tempImgPNG' . md5($file) . random_int(1, 10000) . '.jpg');
		$checkfile = $this->cache->tempFilename('_tempImgPNG' . md5($file) . random_int(1, 10000) . '.jpg');

$check = imagewebp($im, $checkfile);
		if (!$check) {
			return $this->imageError($file, $firstTime, sprintf('Error creating temporary file "%s" when using GD library to parse WEBP image', $checkfile));
		}

@imagejpeg($im, $tempfile);
		$data = file_get_contents($tempfile);
		imagedestroy($im);
		unlink($tempfile);
		unlink($checkfile);

return $data;
	}

public function processSvg($data, $file, $firstTime)
	{
		$svg = new Svg($this->mpdf, $this->otl, $this->cssManager, $this, $this->sizeConverter, $this->colorConverter, $this->languageToFont, $this->scriptToLanguage);

$family = $this->mpdf->FontFamily;
		$style = $this->mpdf->FontStyle;
		$size = $this->mpdf->FontSizePt;

$info = $svg->ImageSVG($data);

// Restore font
		if ($family) {
			$this->mpdf->SetFont($family, $style, $size, false);
		}

if (!$info) {
			return $this->imageError($file, $firstTime, 'Error parsing SVG file');
		}

$info['type'] = 'svg';
		$info['i'] = count($this->mpdf->formobjects) + 1;
		$this->mpdf->formobjects[$file] = $info;

return $info;
	}

public function processGif($data, $file, $firstTime, $interpolation)
	{
		$gd = function_exists('gd_info')
			? gd_info()
			: [];

if (isset($gd['GIF Read Support']) && $gd['GIF Read Support']) {

$im = @imagecreatefromstring($data);

if ($im) {

$tempfile = $this->cache->tempFilename('_tempImgPNG' . md5($file) . random_int(1, 10000) . '.png');

imagealphablending($im, false);
				imagesavealpha($im, false);
				imageinterlace($im, false);

$check = @imagepng($im, $tempfile);
				if (!$check) {
					return $this->imageError($file, $firstTime, 'Error creating temporary file (' . $tempfile . ') when using GD library to parse GIF image');
				}

// $info = $this->getImage($tempfile, false);
				$data = file_get_contents($tempfile);
				$info = $this->processPng($data, $tempfile, false, $interpolation);

if (!$info) {
					return $this->imageError($file, $firstTime, 'Error parsing temporary file (' . $tempfile . ') created with GD library to parse GIF image');
				}

imagedestroy($im);
				unlink($tempfile);

$info['type'] = 'gif';
				if ($firstTime) {
					$info['i'] = count($this->mpdf->images) + 1;
					$info['interpolation'] = $interpolation; // mPDF 6
					$this->mpdf->images[$file] = $info;
				}
				return $info;
			}

return $this->imageError($file, $firstTime, 'Error creating GD image file from GIF image');
		}

$gif = new Gif();

$h = 0;
		$w = 0;

$gif->loadFile($data, 0);

$nColors = 0;
		$bgColor = -1;
		$colspace = 'DeviceGray';
		$pal = '';

if (isset($gif->m_img->m_gih->m_bLocalClr) && $gif->m_img->m_gih->m_bLocalClr) {
			$nColors = $gif->m_img->m_gih->m_nTableSize;
			$pal = $gif->m_img->m_gih->m_colorTable->toString();
			if ((isset($bgColor)) && $bgColor !== -1) { // mPDF 5.7.3
				$bgColor = $gif->m_img->m_gih->m_colorTable->colorIndex($bgColor);
			}
			$colspace = 'Indexed';
		} elseif (isset($gif->m_gfh->m_bGlobalClr) && $gif->m_gfh->m_bGlobalClr) {
			$nColors = $gif->m_gfh->m_nTableSize;
			$pal = $gif->m_gfh->m_colorTable->toString();
			if ((isset($bgColor)) && $bgColor != -1) {
				$bgColor = $gif->m_gfh->m_colorTable->colorIndex($bgColor);
			}
			$colspace = 'Indexed';
		}

$trns = '';

if (isset($gif->m_img->m_bTrans) && $gif->m_img->m_bTrans && ($nColors > 0)) {
			$trns = [$gif->m_img->m_nTrans];
		}

$gifdata = $gif->m_img->m_data;
		$w = $gif->m_gfh->m_nWidth;
		$h = $gif->m_gfh->m_nHeight;
		$gif->ClearData();

if ($colspace === 'Indexed' && empty($pal)) {
			return $this->imageError($file, $firstTime, 'Error parsing GIF image - missing colour palette');
		}

if ($this->mpdf->compress) {
			$gifdata = $this->gzCompress($gifdata);
			$info = ['w' => $w, 'h' => $h, 'cs' => $colspace, 'bpc' => 8, 'f' => 'FlateDecode', 'pal' => $pal, 'trns' => $trns, 'data' => $gifdata];
		} else {
			$info = ['w' => $w, 'h' => $h, 'cs' => $colspace, 'bpc' => 8, 'pal' => $pal, 'trns' => $trns, 'data' => $gifdata];
		}

$info['type'] = 'gif';
		if ($firstTime) {
			$info['i'] = count($this->mpdf->images) + 1;
			$info['interpolation'] = $interpolation; // mPDF 6
			$this->mpdf->images[$file] = $info;
		}

return $info;
	}

public function processBmp($data, $file, $firstTime, $interpolation)
	{
		if ($this->bmp === null) {
			$this->bmp = new Bmp($this->mpdf);
		}

$info = $this->bmp->_getBMPimage($data, $file);
		if (isset($info['error'])) {
			return $this->imageError($file, $firstTime, $info['error']);
		}

if ($firstTime) {
			$info['i'] = count($this->mpdf->images) + 1;
			$info['interpolation'] = $interpolation; // mPDF 6
			$this->mpdf->images[$file] = $info;
		}

return $info;
	}

public function processWmf($data, $file, $firstTime)
	{
		if ($this->wmf === null) {
			$this->wmf = new Wmf($this->mpdf, $this->colorConverter);
		}

$wmfres = $this->wmf->_getWMFimage($data);

if ($wmfres[0] == 0) {
			if ($wmfres[1]) {
				return $this->imageError($file, $firstTime, $wmfres[1]);
			}
			return $this->imageError($file, $firstTime, 'Error parsing WMF image');
		}

$info = ['x' => $wmfres[2][0], 'y' => $wmfres[2][1], 'w' => $wmfres[3][0], 'h' => $wmfres[3][1], 'data' => $wmfres[1]];
		$info['i'] = count($this->mpdf->formobjects) + 1;
		$info['type'] = 'wmf';
		$this->mpdf->formobjects[$file] = $info;

return $info;
	}

public function processUnknownType($data, $file, $firstTime, $interpolation)
	{
		$gd = function_exists('gd_info')
			? gd_info()
			: [];

if (isset($gd['PNG Support']) && $gd['PNG Support']) {

$im = @imagecreatefromstring($data);

if (!$im) {
				return $this->imageError($file, $firstTime, 'Error parsing image file - image type not recognised and/or not supported by GD imagecreate');
			}

$tempfile = $this->cache->tempFilename('_tempImgPNG' . md5($file) . random_int(1, 10000) . '.png');

imagealphablending($im, false);
			imagesavealpha($im, false);
			imageinterlace($im, false);

$check = @imagepng($im, $tempfile);

if (!$check) {
				return $this->imageError($file, $firstTime, sprintf('Error creating temporary file "%s" when using GD library to parse unknown image type', $tempfile));
			}

//$info = $this->getImage($tempfile, false);
			$data = file_get_contents($tempfile);
			$info = $this->processPng($data, $tempfile, false, $interpolation);

imagedestroy($im);
			unlink($tempfile);

if (!$info) {
				return $this->imageError($file, $firstTime, sprintf('Error parsing temporary file "%s" created with GD library to parse unknown image type', $tempfile));
			}

$info['type'] = 'png';
			if ($firstTime) {
				$info['i'] = count($this->mpdf->images) + 1;
				$info['interpolation'] = $interpolation; // mPDF 6
				$this->mpdf->images[$file] = $info;
			}

return $info;
		}
	}

}

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