mirror of
https://github.com/mosbth/cimage.git
synced 2025-08-05 15:47:30 +02:00
Prepare to test asciiart
This commit is contained in:
Mikael Roos
432
webroot/imgd.php
432
webroot/imgd.php
@@ -640,6 +640,285 @@ class CRemoteImage
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/**
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* Act as whitelist (or blacklist).
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*
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*/
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class CWhitelist
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{
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/**
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* Array to contain the whitelist options.
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*/
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private $whitelist = array();
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/**
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* Set the whitelist from an array of strings, each item in the
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* whitelist should be a regexp without the surrounding / or #.
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*
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* @param array $whitelist with all valid options,
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* default is to clear the whitelist.
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*
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* @return $this
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*/
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public function set($whitelist = array())
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{
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if (!is_array($whitelist)) {
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throw new Exception("Whitelist is not of a supported format.");
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}
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$this->whitelist = $whitelist;
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return $this;
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}
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/**
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* Check if item exists in the whitelist.
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*
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* @param string $item string to check.
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* @param array $whitelist optional with all valid options, default is null.
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*
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* @return boolean true if item is in whitelist, else false.
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*/
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public function check($item, $whitelist = null)
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{
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if ($whitelist !== null) {
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$this->set($whitelist);
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}
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if (empty($item) or empty($this->whitelist)) {
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return false;
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}
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foreach ($this->whitelist as $regexp) {
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if (preg_match("#$regexp#", $item)) {
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return true;
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}
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}
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return false;
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}
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}
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/**
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* Create an ASCII version of an image.
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* Inspired by https://gist.github.com/donatj/1353237 and various sources.
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*
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*/
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class CAsciiArt
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{
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/**
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* Character set to use.
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*/
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private $characterSet = array(
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'one' => "#0XT|:,.' ",
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'two' => "@%#*+=-:. ",
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'three' => "$@B%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_+~<>i!lI;:,\"^`'. "
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);
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/**
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* Current character set.
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*/
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private $characters = null;
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/**
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* Length of current character set.
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*/
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private $charCount = null;
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/**
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* Scale of the area to swap to a character.
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*/
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private $scale = null;
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/**
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* Strategy to calculate luminance.
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*/
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private $luminanceStrategy = null;
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/**
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* Constructor which sets default options.
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*/
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public function __construct()
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{
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$this->setOptions();
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}
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/**
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* Add a custom character set.
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*
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* @param string $key for the character set.
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* @param string $value for the character set.
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*
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* @return $this
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*/
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public function addCharacterSet($key, $value)
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{
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$this->characterSet[$key] = $value;
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return $this;
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}
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/**
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* Length of current character set.
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*
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* @param array $options to use as default settings.
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*
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* @return $this
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*/
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public function setOptions($options = array())
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{
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$default = array(
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"characterSet" => 'two',
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"scale" => 14,
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"luminanceStrategy" => 3,
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"customCharacterSet" => null,
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);
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$default = array_merge($default, $options);
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if (!is_null($default['customCharacterSet'])) {
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$this->addCharacterSet('custom', $default['customCharacterSet']);
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$default['characterSet'] = 'custom';
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}
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$this->scale = $default['scale'];
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$this->characters = $this->characterSet[$default['characterSet']];
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$this->charCount = strlen($this->characters);
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$this->luminanceStrategy = $default['luminanceStrategy'];
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return $this;
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}
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/**
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* Create an Ascii image from an image file.
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*
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* @param string $filename of the image to use.
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*
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* @return string $ascii with the ASCII image.
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*/
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public function createFromFile($filename)
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{
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$img = imagecreatefromstring(file_get_contents($filename));
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list($width, $height) = getimagesize($filename);
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$ascii = null;
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$incY = $this->scale;
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$incX = $this->scale / 2;
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for ($y = 0; $y < $height - 1; $y += $incY) {
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for ($x = 0; $x < $width - 1; $x += $incX) {
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$toX = min($x + $this->scale / 2, $width - 1);
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$toY = min($y + $this->scale, $height - 1);
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$luminance = $this->luminanceAreaAverage($img, $x, $y, $toX, $toY);
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$ascii .= $this->luminance2character($luminance);
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}
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$ascii .= PHP_EOL;
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}
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return $ascii;
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}
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/**
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* Get the luminance from a region of an image using average color value.
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*
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* @param string $img the image.
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* @param integer $x1 the area to get pixels from.
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* @param integer $y1 the area to get pixels from.
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* @param integer $x2 the area to get pixels from.
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* @param integer $y2 the area to get pixels from.
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*
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* @return integer $luminance with a value between 0 and 100.
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*/
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public function luminanceAreaAverage($img, $x1, $y1, $x2, $y2)
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{
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$numPixels = ($x2 - $x1 + 1) * ($y2 - $y1 + 1);
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$luminance = 0;
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for ($x = $x1; $x <= $x2; $x++) {
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for ($y = $y1; $y <= $y2; $y++) {
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$rgb = imagecolorat($img, $x, $y);
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$red = (($rgb >> 16) & 0xFF);
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$green = (($rgb >> 8) & 0xFF);
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$blue = ($rgb & 0xFF);
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$luminance += $this->getLuminance($red, $green, $blue);
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}
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}
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return $luminance / $numPixels;
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}
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/**
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* Calculate luminance value with different strategies.
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*
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* @param integer $red The color red.
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* @param integer $green The color green.
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* @param integer $blue The color blue.
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*
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* @return float $luminance with a value between 0 and 1.
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*/
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public function getLuminance($red, $green, $blue)
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{
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switch($this->luminanceStrategy) {
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case 1:
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$luminance = ($red * 0.2126 + $green * 0.7152 + $blue * 0.0722) / 255;
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break;
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case 2:
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$luminance = ($red * 0.299 + $green * 0.587 + $blue * 0.114) / 255;
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break;
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case 3:
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$luminance = sqrt(0.299 * pow($red, 2) + 0.587 * pow($green, 2) + 0.114 * pow($blue, 2)) / 255;
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break;
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case 0:
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default:
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$luminance = ($red + $green + $blue) / (255 * 3);
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}
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return $luminance;
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}
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/**
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* Translate the luminance value to a character.
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*
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* @param string $position a value between 0-100 representing the
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* luminance.
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*
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* @return string with the ascii character.
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*/
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public function luminance2character($luminance)
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{
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$position = (int) round($luminance * ($this->charCount - 1));
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$char = $this->characters[$position];
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return $char;
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}
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}
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/**
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* Resize and crop images on the fly, store generated images in a cache.
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*
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@@ -975,6 +1254,13 @@ class CImage
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/*
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* output to ascii can take som options as an array.
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*/
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private $asciiOptions = array();
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/**
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* Properties, the class is mutable and the method setOptions()
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* decides (partly) what properties are created.
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@@ -2891,6 +3177,10 @@ class CImage
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header('Content-type: application/json');
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echo $this->json($file);
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exit;
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} elseif ($format == 'ascii') {
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header('Content-type: text/plain');
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echo $this->ascii($file);
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exit;
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}
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$this->log("Outputting image: $file");
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@@ -2982,6 +3272,38 @@ class CImage
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/**
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* Set options for creating ascii version of image.
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*
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* @param array $options empty to use default or set options to change.
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*
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* @return void.
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*/
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public function setAsciiOptions($options = array())
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{
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$this->asciiOptions = $options;
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}
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/**
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* Create an ASCII version from the image details.
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*
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* @param string $file the file to output.
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*
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* @return string ASCII representation of the image.
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*/
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public function ascii($file = null)
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{
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$file = $file ? $file : $this->cacheFileName;
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$asciiArt = new CAsciiArt();
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$asciiArt->setOptions($this->asciiOptions);
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return $asciiArt->createFromFile($file);
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}
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/**
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* Log an event if verbose mode.
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*
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@@ -3071,70 +3393,6 @@ EOD;
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/**
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* Act as whitelist (or blacklist).
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*
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*/
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class CWhitelist
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{
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/**
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* Array to contain the whitelist options.
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*/
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private $whitelist = array();
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/**
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* Set the whitelist from an array of strings, each item in the
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* whitelist should be a regexp without the surrounding / or #.
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*
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* @param array $whitelist with all valid options,
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* default is to clear the whitelist.
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*
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* @return $this
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*/
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public function set($whitelist = array())
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{
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if (!is_array($whitelist)) {
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throw new Exception("Whitelist is not of a supported format.");
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}
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$this->whitelist = $whitelist;
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return $this;
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}
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/**
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* Check if item exists in the whitelist.
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*
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* @param string $item string to check.
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* @param array $whitelist optional with all valid options, default is null.
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*
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* @return boolean true if item is in whitelist, else false.
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*/
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public function check($item, $whitelist = null)
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{
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if ($whitelist !== null) {
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$this->set($whitelist);
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}
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if (empty($item) or empty($this->whitelist)) {
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return false;
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}
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foreach ($this->whitelist as $regexp) {
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if (preg_match("#$regexp#", $item)) {
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return true;
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}
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}
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return false;
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}
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}
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/**
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* Resize and crop images on the fly, store generated images in a cache.
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||||
*
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||||
@@ -3144,7 +3402,7 @@ class CWhitelist
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*
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*/
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$version = "v0.7.2 (2015-08-17)";
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$version = "v0.7.3 (2015-09-01)";
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@@ -3890,11 +4148,51 @@ verbose("filters = " . print_r($filters, 1));
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/**
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* json - output the image as a JSON object with details on the image.
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* json - output the image as a JSON object with details on the image.
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* ascii - output the image as ASCII art.
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*/
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$outputFormat = getDefined('json', 'json', null);
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$outputFormat = getDefined('ascii', 'ascii', $outputFormat);
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verbose("outputformat = $outputFormat");
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if ($outputFormat == 'ascii') {
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$defaultOptions = getConfig(
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'ascii-options',
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array(
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"characterSet" => 'two',
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"scale" => 14,
|
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"luminanceStrategy" => 3,
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"customCharacterSet" => null,
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||||
)
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||||
);
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$options = get('ascii');
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||||
$options = explode(',', $options);
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||||
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||||
if (isset($options[0]) && !empty($options[0])) {
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||||
$defaultOptions['characterSet'] = $options[0];
|
||||
}
|
||||
|
||||
if (isset($options[1]) && !empty($options[1])) {
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||||
$defaultOptions['scale'] = $options[1];
|
||||
}
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||||
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if (isset($options[2]) && !empty($options[2])) {
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$defaultOptions['luminanceStrategy'] = $options[2];
|
||||
}
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||||
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if (count($options) > 3) {
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||||
// Last option is custom character string
|
||||
unset($options[0]);
|
||||
unset($options[1]);
|
||||
unset($options[2]);
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||||
$characterString = implode($options);
|
||||
$defaultOptions['customCharacterSet'] = $characterString;
|
||||
}
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||||
|
||||
$img->setAsciiOptions($defaultOptions);
|
||||
}
|
||||
|
||||
verbose("json = $outputFormat");
|
||||
|
||||
|
||||
|
||||
|
||||
432
webroot/imgp.php
432
webroot/imgp.php
@@ -640,6 +640,285 @@ class CRemoteImage
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Act as whitelist (or blacklist).
|
||||
*
|
||||
*/
|
||||
class CWhitelist
|
||||
{
|
||||
/**
|
||||
* Array to contain the whitelist options.
|
||||
*/
|
||||
private $whitelist = array();
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Set the whitelist from an array of strings, each item in the
|
||||
* whitelist should be a regexp without the surrounding / or #.
|
||||
*
|
||||
* @param array $whitelist with all valid options,
|
||||
* default is to clear the whitelist.
|
||||
*
|
||||
* @return $this
|
||||
*/
|
||||
public function set($whitelist = array())
|
||||
{
|
||||
if (!is_array($whitelist)) {
|
||||
throw new Exception("Whitelist is not of a supported format.");
|
||||
}
|
||||
|
||||
$this->whitelist = $whitelist;
|
||||
return $this;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Check if item exists in the whitelist.
|
||||
*
|
||||
* @param string $item string to check.
|
||||
* @param array $whitelist optional with all valid options, default is null.
|
||||
*
|
||||
* @return boolean true if item is in whitelist, else false.
|
||||
*/
|
||||
public function check($item, $whitelist = null)
|
||||
{
|
||||
if ($whitelist !== null) {
|
||||
$this->set($whitelist);
|
||||
}
|
||||
|
||||
if (empty($item) or empty($this->whitelist)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
foreach ($this->whitelist as $regexp) {
|
||||
if (preg_match("#$regexp#", $item)) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Create an ASCII version of an image.
|
||||
* Inspired by https://gist.github.com/donatj/1353237 and various sources.
|
||||
*
|
||||
*/
|
||||
class CAsciiArt
|
||||
{
|
||||
/**
|
||||
* Character set to use.
|
||||
*/
|
||||
private $characterSet = array(
|
||||
'one' => "#0XT|:,.' ",
|
||||
'two' => "@%#*+=-:. ",
|
||||
'three' => "$@B%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_+~<>i!lI;:,\"^`'. "
|
||||
);
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Current character set.
|
||||
*/
|
||||
private $characters = null;
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Length of current character set.
|
||||
*/
|
||||
private $charCount = null;
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Scale of the area to swap to a character.
|
||||
*/
|
||||
private $scale = null;
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Strategy to calculate luminance.
|
||||
*/
|
||||
private $luminanceStrategy = null;
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Constructor which sets default options.
|
||||
*/
|
||||
public function __construct()
|
||||
{
|
||||
$this->setOptions();
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Add a custom character set.
|
||||
*
|
||||
* @param string $key for the character set.
|
||||
* @param string $value for the character set.
|
||||
*
|
||||
* @return $this
|
||||
*/
|
||||
public function addCharacterSet($key, $value)
|
||||
{
|
||||
$this->characterSet[$key] = $value;
|
||||
return $this;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Length of current character set.
|
||||
*
|
||||
* @param array $options to use as default settings.
|
||||
*
|
||||
* @return $this
|
||||
*/
|
||||
public function setOptions($options = array())
|
||||
{
|
||||
$default = array(
|
||||
"characterSet" => 'two',
|
||||
"scale" => 14,
|
||||
"luminanceStrategy" => 3,
|
||||
"customCharacterSet" => null,
|
||||
);
|
||||
$default = array_merge($default, $options);
|
||||
|
||||
if (!is_null($default['customCharacterSet'])) {
|
||||
$this->addCharacterSet('custom', $default['customCharacterSet']);
|
||||
$default['characterSet'] = 'custom';
|
||||
}
|
||||
|
||||
$this->scale = $default['scale'];
|
||||
$this->characters = $this->characterSet[$default['characterSet']];
|
||||
$this->charCount = strlen($this->characters);
|
||||
$this->luminanceStrategy = $default['luminanceStrategy'];
|
||||
|
||||
return $this;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Create an Ascii image from an image file.
|
||||
*
|
||||
* @param string $filename of the image to use.
|
||||
*
|
||||
* @return string $ascii with the ASCII image.
|
||||
*/
|
||||
public function createFromFile($filename)
|
||||
{
|
||||
$img = imagecreatefromstring(file_get_contents($filename));
|
||||
list($width, $height) = getimagesize($filename);
|
||||
|
||||
$ascii = null;
|
||||
$incY = $this->scale;
|
||||
$incX = $this->scale / 2;
|
||||
|
||||
for ($y = 0; $y < $height - 1; $y += $incY) {
|
||||
for ($x = 0; $x < $width - 1; $x += $incX) {
|
||||
$toX = min($x + $this->scale / 2, $width - 1);
|
||||
$toY = min($y + $this->scale, $height - 1);
|
||||
$luminance = $this->luminanceAreaAverage($img, $x, $y, $toX, $toY);
|
||||
$ascii .= $this->luminance2character($luminance);
|
||||
}
|
||||
$ascii .= PHP_EOL;
|
||||
}
|
||||
|
||||
return $ascii;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Get the luminance from a region of an image using average color value.
|
||||
*
|
||||
* @param string $img the image.
|
||||
* @param integer $x1 the area to get pixels from.
|
||||
* @param integer $y1 the area to get pixels from.
|
||||
* @param integer $x2 the area to get pixels from.
|
||||
* @param integer $y2 the area to get pixels from.
|
||||
*
|
||||
* @return integer $luminance with a value between 0 and 100.
|
||||
*/
|
||||
public function luminanceAreaAverage($img, $x1, $y1, $x2, $y2)
|
||||
{
|
||||
$numPixels = ($x2 - $x1 + 1) * ($y2 - $y1 + 1);
|
||||
$luminance = 0;
|
||||
|
||||
for ($x = $x1; $x <= $x2; $x++) {
|
||||
for ($y = $y1; $y <= $y2; $y++) {
|
||||
$rgb = imagecolorat($img, $x, $y);
|
||||
$red = (($rgb >> 16) & 0xFF);
|
||||
$green = (($rgb >> 8) & 0xFF);
|
||||
$blue = ($rgb & 0xFF);
|
||||
$luminance += $this->getLuminance($red, $green, $blue);
|
||||
}
|
||||
}
|
||||
|
||||
return $luminance / $numPixels;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Calculate luminance value with different strategies.
|
||||
*
|
||||
* @param integer $red The color red.
|
||||
* @param integer $green The color green.
|
||||
* @param integer $blue The color blue.
|
||||
*
|
||||
* @return float $luminance with a value between 0 and 1.
|
||||
*/
|
||||
public function getLuminance($red, $green, $blue)
|
||||
{
|
||||
switch($this->luminanceStrategy) {
|
||||
case 1:
|
||||
$luminance = ($red * 0.2126 + $green * 0.7152 + $blue * 0.0722) / 255;
|
||||
break;
|
||||
case 2:
|
||||
$luminance = ($red * 0.299 + $green * 0.587 + $blue * 0.114) / 255;
|
||||
break;
|
||||
case 3:
|
||||
$luminance = sqrt(0.299 * pow($red, 2) + 0.587 * pow($green, 2) + 0.114 * pow($blue, 2)) / 255;
|
||||
break;
|
||||
case 0:
|
||||
default:
|
||||
$luminance = ($red + $green + $blue) / (255 * 3);
|
||||
}
|
||||
|
||||
return $luminance;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Translate the luminance value to a character.
|
||||
*
|
||||
* @param string $position a value between 0-100 representing the
|
||||
* luminance.
|
||||
*
|
||||
* @return string with the ascii character.
|
||||
*/
|
||||
public function luminance2character($luminance)
|
||||
{
|
||||
$position = (int) round($luminance * ($this->charCount - 1));
|
||||
$char = $this->characters[$position];
|
||||
return $char;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Resize and crop images on the fly, store generated images in a cache.
|
||||
*
|
||||
@@ -975,6 +1254,13 @@ class CImage
|
||||
|
||||
|
||||
|
||||
/*
|
||||
* output to ascii can take som options as an array.
|
||||
*/
|
||||
private $asciiOptions = array();
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Properties, the class is mutable and the method setOptions()
|
||||
* decides (partly) what properties are created.
|
||||
@@ -2891,6 +3177,10 @@ class CImage
|
||||
header('Content-type: application/json');
|
||||
echo $this->json($file);
|
||||
exit;
|
||||
} elseif ($format == 'ascii') {
|
||||
header('Content-type: text/plain');
|
||||
echo $this->ascii($file);
|
||||
exit;
|
||||
}
|
||||
|
||||
$this->log("Outputting image: $file");
|
||||
@@ -2982,6 +3272,38 @@ class CImage
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Set options for creating ascii version of image.
|
||||
*
|
||||
* @param array $options empty to use default or set options to change.
|
||||
*
|
||||
* @return void.
|
||||
*/
|
||||
public function setAsciiOptions($options = array())
|
||||
{
|
||||
$this->asciiOptions = $options;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Create an ASCII version from the image details.
|
||||
*
|
||||
* @param string $file the file to output.
|
||||
*
|
||||
* @return string ASCII representation of the image.
|
||||
*/
|
||||
public function ascii($file = null)
|
||||
{
|
||||
$file = $file ? $file : $this->cacheFileName;
|
||||
|
||||
$asciiArt = new CAsciiArt();
|
||||
$asciiArt->setOptions($this->asciiOptions);
|
||||
return $asciiArt->createFromFile($file);
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Log an event if verbose mode.
|
||||
*
|
||||
@@ -3071,70 +3393,6 @@ EOD;
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Act as whitelist (or blacklist).
|
||||
*
|
||||
*/
|
||||
class CWhitelist
|
||||
{
|
||||
/**
|
||||
* Array to contain the whitelist options.
|
||||
*/
|
||||
private $whitelist = array();
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Set the whitelist from an array of strings, each item in the
|
||||
* whitelist should be a regexp without the surrounding / or #.
|
||||
*
|
||||
* @param array $whitelist with all valid options,
|
||||
* default is to clear the whitelist.
|
||||
*
|
||||
* @return $this
|
||||
*/
|
||||
public function set($whitelist = array())
|
||||
{
|
||||
if (!is_array($whitelist)) {
|
||||
throw new Exception("Whitelist is not of a supported format.");
|
||||
}
|
||||
|
||||
$this->whitelist = $whitelist;
|
||||
return $this;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Check if item exists in the whitelist.
|
||||
*
|
||||
* @param string $item string to check.
|
||||
* @param array $whitelist optional with all valid options, default is null.
|
||||
*
|
||||
* @return boolean true if item is in whitelist, else false.
|
||||
*/
|
||||
public function check($item, $whitelist = null)
|
||||
{
|
||||
if ($whitelist !== null) {
|
||||
$this->set($whitelist);
|
||||
}
|
||||
|
||||
if (empty($item) or empty($this->whitelist)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
foreach ($this->whitelist as $regexp) {
|
||||
if (preg_match("#$regexp#", $item)) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Resize and crop images on the fly, store generated images in a cache.
|
||||
*
|
||||
@@ -3144,7 +3402,7 @@ class CWhitelist
|
||||
*
|
||||
*/
|
||||
|
||||
$version = "v0.7.2 (2015-08-17)";
|
||||
$version = "v0.7.3 (2015-09-01)";
|
||||
|
||||
|
||||
|
||||
@@ -3890,11 +4148,51 @@ verbose("filters = " . print_r($filters, 1));
|
||||
|
||||
|
||||
/**
|
||||
* json - output the image as a JSON object with details on the image.
|
||||
* json - output the image as a JSON object with details on the image.
|
||||
* ascii - output the image as ASCII art.
|
||||
*/
|
||||
$outputFormat = getDefined('json', 'json', null);
|
||||
$outputFormat = getDefined('ascii', 'ascii', $outputFormat);
|
||||
|
||||
verbose("outputformat = $outputFormat");
|
||||
|
||||
if ($outputFormat == 'ascii') {
|
||||
$defaultOptions = getConfig(
|
||||
'ascii-options',
|
||||
array(
|
||||
"characterSet" => 'two',
|
||||
"scale" => 14,
|
||||
"luminanceStrategy" => 3,
|
||||
"customCharacterSet" => null,
|
||||
)
|
||||
);
|
||||
$options = get('ascii');
|
||||
$options = explode(',', $options);
|
||||
|
||||
if (isset($options[0]) && !empty($options[0])) {
|
||||
$defaultOptions['characterSet'] = $options[0];
|
||||
}
|
||||
|
||||
if (isset($options[1]) && !empty($options[1])) {
|
||||
$defaultOptions['scale'] = $options[1];
|
||||
}
|
||||
|
||||
if (isset($options[2]) && !empty($options[2])) {
|
||||
$defaultOptions['luminanceStrategy'] = $options[2];
|
||||
}
|
||||
|
||||
if (count($options) > 3) {
|
||||
// Last option is custom character string
|
||||
unset($options[0]);
|
||||
unset($options[1]);
|
||||
unset($options[2]);
|
||||
$characterString = implode($options);
|
||||
$defaultOptions['customCharacterSet'] = $characterString;
|
||||
}
|
||||
|
||||
$img->setAsciiOptions($defaultOptions);
|
||||
}
|
||||
|
||||
verbose("json = $outputFormat");
|
||||
|
||||
|
||||
|
||||
|
||||
432
webroot/imgs.php
432
webroot/imgs.php
@@ -640,6 +640,285 @@ class CRemoteImage
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Act as whitelist (or blacklist).
|
||||
*
|
||||
*/
|
||||
class CWhitelist
|
||||
{
|
||||
/**
|
||||
* Array to contain the whitelist options.
|
||||
*/
|
||||
private $whitelist = array();
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Set the whitelist from an array of strings, each item in the
|
||||
* whitelist should be a regexp without the surrounding / or #.
|
||||
*
|
||||
* @param array $whitelist with all valid options,
|
||||
* default is to clear the whitelist.
|
||||
*
|
||||
* @return $this
|
||||
*/
|
||||
public function set($whitelist = array())
|
||||
{
|
||||
if (!is_array($whitelist)) {
|
||||
throw new Exception("Whitelist is not of a supported format.");
|
||||
}
|
||||
|
||||
$this->whitelist = $whitelist;
|
||||
return $this;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Check if item exists in the whitelist.
|
||||
*
|
||||
* @param string $item string to check.
|
||||
* @param array $whitelist optional with all valid options, default is null.
|
||||
*
|
||||
* @return boolean true if item is in whitelist, else false.
|
||||
*/
|
||||
public function check($item, $whitelist = null)
|
||||
{
|
||||
if ($whitelist !== null) {
|
||||
$this->set($whitelist);
|
||||
}
|
||||
|
||||
if (empty($item) or empty($this->whitelist)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
foreach ($this->whitelist as $regexp) {
|
||||
if (preg_match("#$regexp#", $item)) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Create an ASCII version of an image.
|
||||
* Inspired by https://gist.github.com/donatj/1353237 and various sources.
|
||||
*
|
||||
*/
|
||||
class CAsciiArt
|
||||
{
|
||||
/**
|
||||
* Character set to use.
|
||||
*/
|
||||
private $characterSet = array(
|
||||
'one' => "#0XT|:,.' ",
|
||||
'two' => "@%#*+=-:. ",
|
||||
'three' => "$@B%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_+~<>i!lI;:,\"^`'. "
|
||||
);
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Current character set.
|
||||
*/
|
||||
private $characters = null;
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Length of current character set.
|
||||
*/
|
||||
private $charCount = null;
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Scale of the area to swap to a character.
|
||||
*/
|
||||
private $scale = null;
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Strategy to calculate luminance.
|
||||
*/
|
||||
private $luminanceStrategy = null;
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Constructor which sets default options.
|
||||
*/
|
||||
public function __construct()
|
||||
{
|
||||
$this->setOptions();
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Add a custom character set.
|
||||
*
|
||||
* @param string $key for the character set.
|
||||
* @param string $value for the character set.
|
||||
*
|
||||
* @return $this
|
||||
*/
|
||||
public function addCharacterSet($key, $value)
|
||||
{
|
||||
$this->characterSet[$key] = $value;
|
||||
return $this;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Length of current character set.
|
||||
*
|
||||
* @param array $options to use as default settings.
|
||||
*
|
||||
* @return $this
|
||||
*/
|
||||
public function setOptions($options = array())
|
||||
{
|
||||
$default = array(
|
||||
"characterSet" => 'two',
|
||||
"scale" => 14,
|
||||
"luminanceStrategy" => 3,
|
||||
"customCharacterSet" => null,
|
||||
);
|
||||
$default = array_merge($default, $options);
|
||||
|
||||
if (!is_null($default['customCharacterSet'])) {
|
||||
$this->addCharacterSet('custom', $default['customCharacterSet']);
|
||||
$default['characterSet'] = 'custom';
|
||||
}
|
||||
|
||||
$this->scale = $default['scale'];
|
||||
$this->characters = $this->characterSet[$default['characterSet']];
|
||||
$this->charCount = strlen($this->characters);
|
||||
$this->luminanceStrategy = $default['luminanceStrategy'];
|
||||
|
||||
return $this;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Create an Ascii image from an image file.
|
||||
*
|
||||
* @param string $filename of the image to use.
|
||||
*
|
||||
* @return string $ascii with the ASCII image.
|
||||
*/
|
||||
public function createFromFile($filename)
|
||||
{
|
||||
$img = imagecreatefromstring(file_get_contents($filename));
|
||||
list($width, $height) = getimagesize($filename);
|
||||
|
||||
$ascii = null;
|
||||
$incY = $this->scale;
|
||||
$incX = $this->scale / 2;
|
||||
|
||||
for ($y = 0; $y < $height - 1; $y += $incY) {
|
||||
for ($x = 0; $x < $width - 1; $x += $incX) {
|
||||
$toX = min($x + $this->scale / 2, $width - 1);
|
||||
$toY = min($y + $this->scale, $height - 1);
|
||||
$luminance = $this->luminanceAreaAverage($img, $x, $y, $toX, $toY);
|
||||
$ascii .= $this->luminance2character($luminance);
|
||||
}
|
||||
$ascii .= PHP_EOL;
|
||||
}
|
||||
|
||||
return $ascii;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Get the luminance from a region of an image using average color value.
|
||||
*
|
||||
* @param string $img the image.
|
||||
* @param integer $x1 the area to get pixels from.
|
||||
* @param integer $y1 the area to get pixels from.
|
||||
* @param integer $x2 the area to get pixels from.
|
||||
* @param integer $y2 the area to get pixels from.
|
||||
*
|
||||
* @return integer $luminance with a value between 0 and 100.
|
||||
*/
|
||||
public function luminanceAreaAverage($img, $x1, $y1, $x2, $y2)
|
||||
{
|
||||
$numPixels = ($x2 - $x1 + 1) * ($y2 - $y1 + 1);
|
||||
$luminance = 0;
|
||||
|
||||
for ($x = $x1; $x <= $x2; $x++) {
|
||||
for ($y = $y1; $y <= $y2; $y++) {
|
||||
$rgb = imagecolorat($img, $x, $y);
|
||||
$red = (($rgb >> 16) & 0xFF);
|
||||
$green = (($rgb >> 8) & 0xFF);
|
||||
$blue = ($rgb & 0xFF);
|
||||
$luminance += $this->getLuminance($red, $green, $blue);
|
||||
}
|
||||
}
|
||||
|
||||
return $luminance / $numPixels;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Calculate luminance value with different strategies.
|
||||
*
|
||||
* @param integer $red The color red.
|
||||
* @param integer $green The color green.
|
||||
* @param integer $blue The color blue.
|
||||
*
|
||||
* @return float $luminance with a value between 0 and 1.
|
||||
*/
|
||||
public function getLuminance($red, $green, $blue)
|
||||
{
|
||||
switch($this->luminanceStrategy) {
|
||||
case 1:
|
||||
$luminance = ($red * 0.2126 + $green * 0.7152 + $blue * 0.0722) / 255;
|
||||
break;
|
||||
case 2:
|
||||
$luminance = ($red * 0.299 + $green * 0.587 + $blue * 0.114) / 255;
|
||||
break;
|
||||
case 3:
|
||||
$luminance = sqrt(0.299 * pow($red, 2) + 0.587 * pow($green, 2) + 0.114 * pow($blue, 2)) / 255;
|
||||
break;
|
||||
case 0:
|
||||
default:
|
||||
$luminance = ($red + $green + $blue) / (255 * 3);
|
||||
}
|
||||
|
||||
return $luminance;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Translate the luminance value to a character.
|
||||
*
|
||||
* @param string $position a value between 0-100 representing the
|
||||
* luminance.
|
||||
*
|
||||
* @return string with the ascii character.
|
||||
*/
|
||||
public function luminance2character($luminance)
|
||||
{
|
||||
$position = (int) round($luminance * ($this->charCount - 1));
|
||||
$char = $this->characters[$position];
|
||||
return $char;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Resize and crop images on the fly, store generated images in a cache.
|
||||
*
|
||||
@@ -975,6 +1254,13 @@ class CImage
|
||||
|
||||
|
||||
|
||||
/*
|
||||
* output to ascii can take som options as an array.
|
||||
*/
|
||||
private $asciiOptions = array();
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Properties, the class is mutable and the method setOptions()
|
||||
* decides (partly) what properties are created.
|
||||
@@ -2891,6 +3177,10 @@ class CImage
|
||||
header('Content-type: application/json');
|
||||
echo $this->json($file);
|
||||
exit;
|
||||
} elseif ($format == 'ascii') {
|
||||
header('Content-type: text/plain');
|
||||
echo $this->ascii($file);
|
||||
exit;
|
||||
}
|
||||
|
||||
$this->log("Outputting image: $file");
|
||||
@@ -2982,6 +3272,38 @@ class CImage
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Set options for creating ascii version of image.
|
||||
*
|
||||
* @param array $options empty to use default or set options to change.
|
||||
*
|
||||
* @return void.
|
||||
*/
|
||||
public function setAsciiOptions($options = array())
|
||||
{
|
||||
$this->asciiOptions = $options;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Create an ASCII version from the image details.
|
||||
*
|
||||
* @param string $file the file to output.
|
||||
*
|
||||
* @return string ASCII representation of the image.
|
||||
*/
|
||||
public function ascii($file = null)
|
||||
{
|
||||
$file = $file ? $file : $this->cacheFileName;
|
||||
|
||||
$asciiArt = new CAsciiArt();
|
||||
$asciiArt->setOptions($this->asciiOptions);
|
||||
return $asciiArt->createFromFile($file);
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Log an event if verbose mode.
|
||||
*
|
||||
@@ -3071,70 +3393,6 @@ EOD;
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Act as whitelist (or blacklist).
|
||||
*
|
||||
*/
|
||||
class CWhitelist
|
||||
{
|
||||
/**
|
||||
* Array to contain the whitelist options.
|
||||
*/
|
||||
private $whitelist = array();
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Set the whitelist from an array of strings, each item in the
|
||||
* whitelist should be a regexp without the surrounding / or #.
|
||||
*
|
||||
* @param array $whitelist with all valid options,
|
||||
* default is to clear the whitelist.
|
||||
*
|
||||
* @return $this
|
||||
*/
|
||||
public function set($whitelist = array())
|
||||
{
|
||||
if (!is_array($whitelist)) {
|
||||
throw new Exception("Whitelist is not of a supported format.");
|
||||
}
|
||||
|
||||
$this->whitelist = $whitelist;
|
||||
return $this;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Check if item exists in the whitelist.
|
||||
*
|
||||
* @param string $item string to check.
|
||||
* @param array $whitelist optional with all valid options, default is null.
|
||||
*
|
||||
* @return boolean true if item is in whitelist, else false.
|
||||
*/
|
||||
public function check($item, $whitelist = null)
|
||||
{
|
||||
if ($whitelist !== null) {
|
||||
$this->set($whitelist);
|
||||
}
|
||||
|
||||
if (empty($item) or empty($this->whitelist)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
foreach ($this->whitelist as $regexp) {
|
||||
if (preg_match("#$regexp#", $item)) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Resize and crop images on the fly, store generated images in a cache.
|
||||
*
|
||||
@@ -3144,7 +3402,7 @@ class CWhitelist
|
||||
*
|
||||
*/
|
||||
|
||||
$version = "v0.7.2 (2015-08-17)";
|
||||
$version = "v0.7.3 (2015-09-01)";
|
||||
|
||||
|
||||
|
||||
@@ -3890,11 +4148,51 @@ verbose("filters = " . print_r($filters, 1));
|
||||
|
||||
|
||||
/**
|
||||
* json - output the image as a JSON object with details on the image.
|
||||
* json - output the image as a JSON object with details on the image.
|
||||
* ascii - output the image as ASCII art.
|
||||
*/
|
||||
$outputFormat = getDefined('json', 'json', null);
|
||||
$outputFormat = getDefined('ascii', 'ascii', $outputFormat);
|
||||
|
||||
verbose("outputformat = $outputFormat");
|
||||
|
||||
if ($outputFormat == 'ascii') {
|
||||
$defaultOptions = getConfig(
|
||||
'ascii-options',
|
||||
array(
|
||||
"characterSet" => 'two',
|
||||
"scale" => 14,
|
||||
"luminanceStrategy" => 3,
|
||||
"customCharacterSet" => null,
|
||||
)
|
||||
);
|
||||
$options = get('ascii');
|
||||
$options = explode(',', $options);
|
||||
|
||||
if (isset($options[0]) && !empty($options[0])) {
|
||||
$defaultOptions['characterSet'] = $options[0];
|
||||
}
|
||||
|
||||
if (isset($options[1]) && !empty($options[1])) {
|
||||
$defaultOptions['scale'] = $options[1];
|
||||
}
|
||||
|
||||
if (isset($options[2]) && !empty($options[2])) {
|
||||
$defaultOptions['luminanceStrategy'] = $options[2];
|
||||
}
|
||||
|
||||
if (count($options) > 3) {
|
||||
// Last option is custom character string
|
||||
unset($options[0]);
|
||||
unset($options[1]);
|
||||
unset($options[2]);
|
||||
$characterString = implode($options);
|
||||
$defaultOptions['customCharacterSet'] = $characterString;
|
||||
}
|
||||
|
||||
$img->setAsciiOptions($defaultOptions);
|
||||
}
|
||||
|
||||
verbose("json = $outputFormat");
|
||||
|
||||
|
||||
|
||||
|
||||
Reference in New Issue
Block a user