protected $imageType = IMAGETYPE_PNG; // Default to png if file type isn't evident.
/** @var string */
protected $mimeType = 'image/png'; // Default to png
- /** @var int */
- protected $bitDepth = 24;
/** @var null|string */
protected $filePath = null;
/** @var finfo */
$retVal = imagewbmp($this->resource, $filePath);
break;
case IMAGETYPE_BMP:
- $retVal = imagebmp($this->resource, $filePath, $this->bitDepth);
+ $retVal = imagebmp($this->resource, $filePath);
break;
default:
$retVal = imagepng($this->resource, $filePath);
}
}
- /**
- * Create a new image from file or URL
- *
- * @link http://www.programmierer-forum.de/function-imagecreatefrombmp-laeuft-mit-allen-bitraten-t143137.htm
- * @version 1.00
- * @param string $fileName <p>
- * Path to the BMP image.
- * </p>
- * @return bool|resource|\GdImage an image resource identifier on success, <b>FALSE</b> on errors.
- */
- private function imagecreatefrombmp($fileName) {
- if (!($fh = fopen($fileName, 'rb'))) {
- $this->logger->warning('imagecreatefrombmp: Can not open ' . $fileName, ['app' => 'core']);
- return false;
- }
- // read file header
- $meta = unpack('vtype/Vfilesize/Vreserved/Voffset', fread($fh, 14));
- // check for bitmap
- if ($meta['type'] != 19778) {
- fclose($fh);
- $this->logger->warning('imagecreatefrombmp: Can not open ' . $fileName . ' is not a bitmap!', ['app' => 'core']);
- return false;
- }
- // read image header
- $meta += unpack('Vheadersize/Vwidth/Vheight/vplanes/vbits/Vcompression/Vimagesize/Vxres/Vyres/Vcolors/Vimportant', fread($fh, 40));
- // read additional 16bit header
- if ($meta['bits'] == 16) {
- $meta += unpack('VrMask/VgMask/VbMask', fread($fh, 12));
- }
- // set bytes and padding
- $meta['bytes'] = $meta['bits'] / 8;
- $this->bitDepth = $meta['bits']; //remember the bit depth for the imagebmp call
- $meta['decal'] = 4 - (4 * (($meta['width'] * $meta['bytes'] / 4) - floor($meta['width'] * $meta['bytes'] / 4)));
- if ($meta['decal'] == 4) {
- $meta['decal'] = 0;
- }
- // obtain imagesize
- if ($meta['imagesize'] < 1) {
- $meta['imagesize'] = $meta['filesize'] - $meta['offset'];
- // in rare cases filesize is equal to offset so we need to read physical size
- if ($meta['imagesize'] < 1) {
- $meta['imagesize'] = @filesize($fileName) - $meta['offset'];
- if ($meta['imagesize'] < 1) {
- fclose($fh);
- $this->logger->warning('imagecreatefrombmp: Can not obtain file size of ' . $fileName . ' is not a bitmap!', ['app' => 'core']);
- return false;
- }
- }
- }
- // calculate colors
- $meta['colors'] = !$meta['colors'] ? pow(2, $meta['bits']) : $meta['colors'];
- // read color palette
- $palette = [];
- if ($meta['bits'] < 16) {
- $palette = unpack('l' . $meta['colors'], fread($fh, $meta['colors'] * 4));
- // in rare cases the color value is signed
- if ($palette[1] < 0) {
- foreach ($palette as $i => $color) {
- $palette[$i] = $color + 16777216;
- }
- }
- }
- if (!$this->checkImageMemory($meta['width'], $meta['height'])) {
- fclose($fh);
- return false;
- }
- // create gd image
- $im = imagecreatetruecolor($meta['width'], $meta['height']);
- if ($im == false) {
- fclose($fh);
- $this->logger->warning(
- 'imagecreatefrombmp: imagecreatetruecolor failed for file "' . $fileName . '" with dimensions ' . $meta['width'] . 'x' . $meta['height'],
- ['app' => 'core']);
- return false;
- }
-
- $data = fread($fh, $meta['imagesize']);
- $p = 0;
- $vide = chr(0);
- $y = $meta['height'] - 1;
- $error = 'imagecreatefrombmp: ' . $fileName . ' has not enough data!';
- // loop through the image data beginning with the lower left corner
- while ($y >= 0) {
- $x = 0;
- while ($x < $meta['width']) {
- switch ($meta['bits']) {
- case 32:
- case 24:
- if (!($part = substr($data, $p, 3))) {
- $this->logger->warning($error, ['app' => 'core']);
- return $im;
- }
- $color = @unpack('V', $part . $vide);
- break;
- case 16:
- if (!($part = substr($data, $p, 2))) {
- fclose($fh);
- $this->logger->warning($error, ['app' => 'core']);
- return $im;
- }
- $color = @unpack('v', $part);
- $color[1] = (($color[1] & 0xf800) >> 8) * 65536 + (($color[1] & 0x07e0) >> 3) * 256 + (($color[1] & 0x001f) << 3);
- break;
- case 8:
- $color = @unpack('n', $vide . ($data[$p] ?? ''));
- $color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1];
- break;
- case 4:
- $color = @unpack('n', $vide . ($data[floor($p)] ?? ''));
- $color[1] = ($p * 2) % 2 == 0 ? $color[1] >> 4 : $color[1] & 0x0F;
- $color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1];
- break;
- case 1:
- $color = @unpack('n', $vide . ($data[floor($p)] ?? ''));
- switch (($p * 8) % 8) {
- case 0:
- $color[1] = $color[1] >> 7;
- break;
- case 1:
- $color[1] = ($color[1] & 0x40) >> 6;
- break;
- case 2:
- $color[1] = ($color[1] & 0x20) >> 5;
- break;
- case 3:
- $color[1] = ($color[1] & 0x10) >> 4;
- break;
- case 4:
- $color[1] = ($color[1] & 0x8) >> 3;
- break;
- case 5:
- $color[1] = ($color[1] & 0x4) >> 2;
- break;
- case 6:
- $color[1] = ($color[1] & 0x2) >> 1;
- break;
- case 7:
- $color[1] = ($color[1] & 0x1);
- break;
- }
- $color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1];
- break;
- default:
- fclose($fh);
- $this->logger->warning('imagecreatefrombmp: ' . $fileName . ' has ' . $meta['bits'] . ' bits and this is not supported!', ['app' => 'core']);
- return false;
- }
- imagesetpixel($im, $x, $y, $color[1]);
- $x++;
- $p += $meta['bytes'];
- }
- $y--;
- $p += $meta['decal'];
- }
- fclose($fh);
- return $im;
- }
-
/**
* Resizes the image preserving ratio.
*
$image = new OC_Image(null, $this->logger, $this->config);
$image->imageType = $this->imageType;
$image->mimeType = $this->mimeType;
- $image->bitDepth = $this->bitDepth;
$image->resource = $this->cropNew($x, $y, $w, $h);
return $image;
$image = new OC_Image(null, $this->logger, $this->config);
$image->imageType = $this->imageType;
$image->mimeType = $this->mimeType;
- $image->bitDepth = $this->bitDepth;
$image->resource = $this->preciseResizeNew($width, $height);
return $image;
$image = new OC_Image(null, $this->logger, $this->config);
$image->imageType = $this->imageType;
$image->mimeType = $this->mimeType;
- $image->bitDepth = $this->bitDepth;
$image->resource = $this->resizeNew($maxSize);
return $image;
}
}
-if (!function_exists('imagebmp')) {
- /**
- * Output a BMP image to either the browser or a file
- *
- * @link http://www.ugia.cn/wp-data/imagebmp.php
- * @author legend <legendsky@hotmail.com>
- * @link http://www.programmierer-forum.de/imagebmp-gute-funktion-gefunden-t143716.htm
- * @author mgutt <marc@gutt.it>
- * @version 1.00
- * @param resource|\GdImage $im
- * @param string $fileName [optional] <p>The path to save the file to.</p>
- * @param int $bit [optional] <p>Bit depth, (default is 24).</p>
- * @param int $compression [optional]
- * @return bool <b>TRUE</b> on success or <b>FALSE</b> on failure.
- */
- function imagebmp($im, $fileName = '', $bit = 24, $compression = 0) {
- if (!in_array($bit, [1, 4, 8, 16, 24, 32])) {
- $bit = 24;
- } elseif ($bit == 32) {
- $bit = 24;
- }
- $bits = (int)pow(2, $bit);
- imagetruecolortopalette($im, true, $bits);
- $width = imagesx($im);
- $height = imagesy($im);
- $colorsNum = imagecolorstotal($im);
- $rgbQuad = '';
- if ($bit <= 8) {
- for ($i = 0; $i < $colorsNum; $i++) {
- $colors = imagecolorsforindex($im, $i);
- $rgbQuad .= chr($colors['blue']) . chr($colors['green']) . chr($colors['red']) . "\0";
- }
- $bmpData = '';
- if ($compression == 0 || $bit < 8) {
- $compression = 0;
- $extra = '';
- $padding = 4 - ceil($width / (8 / $bit)) % 4;
- if ($padding % 4 != 0) {
- $extra = str_repeat("\0", $padding);
- }
- for ($j = $height - 1; $j >= 0; $j--) {
- $i = 0;
- while ($i < $width) {
- $bin = 0;
- $limit = $width - $i < 8 / $bit ? (8 / $bit - $width + $i) * $bit : 0;
- for ($k = 8 - $bit; $k >= $limit; $k -= $bit) {
- $index = imagecolorat($im, $i, $j);
- $bin |= $index << $k;
- $i++;
- }
- $bmpData .= chr($bin);
- }
- $bmpData .= $extra;
- }
- } // RLE8
- elseif ($compression == 1 && $bit == 8) {
- for ($j = $height - 1; $j >= 0; $j--) {
- $lastIndex = null;
- $sameNum = 0;
- for ($i = 0; $i <= $width; $i++) {
- $index = imagecolorat($im, $i, $j);
- if ($index !== $lastIndex || $sameNum > 255) {
- if ($sameNum != 0) {
- $bmpData .= chr($sameNum) . chr($lastIndex);
- }
- $lastIndex = $index;
- $sameNum = 1;
- } else {
- $sameNum++;
- }
- }
- $bmpData .= "\0\0";
- }
- $bmpData .= "\0\1";
- }
- $sizeQuad = strlen($rgbQuad);
- $sizeData = strlen($bmpData);
- } else {
- $extra = '';
- $padding = 4 - ($width * ($bit / 8)) % 4;
- if ($padding % 4 != 0) {
- $extra = str_repeat("\0", $padding);
- }
- $bmpData = '';
- for ($j = $height - 1; $j >= 0; $j--) {
- for ($i = 0; $i < $width; $i++) {
- $index = imagecolorat($im, $i, $j);
- $colors = imagecolorsforindex($im, $index);
- if ($bit == 16) {
- $bin = 0 << $bit;
- $bin |= ($colors['red'] >> 3) << 10;
- $bin |= ($colors['green'] >> 3) << 5;
- $bin |= $colors['blue'] >> 3;
- $bmpData .= pack("v", $bin);
- } else {
- $bmpData .= pack("c*", $colors['blue'], $colors['green'], $colors['red']);
- }
- }
- $bmpData .= $extra;
- }
- $sizeQuad = 0;
- $sizeData = strlen($bmpData);
- $colorsNum = 0;
- }
- $fileHeader = 'BM' . pack('V3', 54 + $sizeQuad + $sizeData, 0, 54 + $sizeQuad);
- $infoHeader = pack('V3v2V*', 0x28, $width, $height, 1, $bit, $compression, $sizeData, 0, 0, $colorsNum, 0);
- if ($fileName != '') {
- $fp = fopen($fileName, 'wb');
- fwrite($fp, $fileHeader . $infoHeader . $rgbQuad . $bmpData);
- fclose($fp);
- return true;
- }
- echo $fileHeader . $infoHeader . $rgbQuad . $bmpData;
- return true;
- }
-}
-
if (!function_exists('exif_imagetype')) {
/**
* Workaround if exif_imagetype does not exist
projects / nextcloud-server.git / commitdiff