Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
/**
* @file include/Photo.php
* @brief This file contains the Photo class for image processing
*/
use Friendica\App;
require_once("include/photos.php");
class Photo {
private $image;
/*
* Put back gd stuff, not everybody have Imagick
*/
private $imagick;
private $width;
private $height;
private $valid;
private $type;
private $types;
/**
* @brief supported mimetypes and corresponding file extensions
*/
static function supportedTypes() {
if (class_exists('Imagick')) {
// Imagick::queryFormats won't help us a lot there...
// At least, not yet, other parts of friendica uses this array
$t = array(
'image/jpeg' => 'jpg',
'image/png' => 'png',
'image/gif' => 'gif'
);
} else {
$t = array();
$t['image/jpeg'] ='jpg';
if (imagetypes() & IMG_PNG) {
$t['image/png'] = 'png';
}
}
return $t;
}
public function __construct($data, $type=null) {
$this->imagick = class_exists('Imagick');
$this->types = $this->supportedTypes();
if (!array_key_exists($type, $this->types)){
$type='image/jpeg';
}
$this->type = $type;
if ($this->is_imagick() && $this->load_data($data)) {
return true;
} else {
// Failed to load with Imagick, fallback
$this->imagick = false;
}
return $this->load_data($data);
}
public function __destruct() {
if ($this->image) {
if ($this->is_imagick()) {
$this->image->clear();
$this->image->destroy();
return;
}
imagedestroy($this->image);
}
}
public function is_imagick() {
return $this->imagick;
}
/**
* @brief Maps Mime types to Imagick formats
* @return arr With with image formats (mime type as key)
*/
public function get_FormatsMap() {
$m = array(
'image/jpeg' => 'JPG',
'image/png' => 'PNG',
'image/gif' => 'GIF'
);
return $m;
}
private function load_data($data) {
if ($this->is_imagick()) {
$this->image = new Imagick();
try {
$this->image->readImageBlob($data);
} catch (Exception $e) {
// Imagick couldn't use the data
return false;
}
/*
* Setup the image to the format it will be saved to
*/
$map = $this->get_FormatsMap();
$format = $map[$type];
$this->image->setFormat($format);
// Always coalesce, if it is not a multi-frame image it won't hurt anyway
$this->image = $this->image->coalesceImages();
/*
* setup the compression here, so we'll do it only once
*/
switch($this->getType()){
case "image/png":
$quality = get_config('system', 'png_quality');
if ((! $quality) || ($quality > 9)) {
$quality = PNG_QUALITY;
}
/*
* From http://www.imagemagick.org/script/command-line-options.php#quality:
*
* 'For the MNG and PNG image formats, the quality value sets
* the zlib compression level (quality / 10) and filter-type (quality % 10).
* The default PNG "quality" is 75, which means compression level 7 with adaptive PNG filtering,
* unless the image has a color map, in which case it means compression level 7 with no PNG filtering'
*/
$quality = $quality * 10;
$this->image->setCompressionQuality($quality);
break;
case "image/jpeg":
$quality = get_config('system', 'jpeg_quality');
if ((! $quality) || ($quality > 100)) {
$quality = JPEG_QUALITY;
}
$this->image->setCompressionQuality($quality);
}
// The 'width' and 'height' properties are only used by non-Imagick routines.
$this->width = $this->image->getImageWidth();
$this->height = $this->image->getImageHeight();
$this->valid = true;
return true;
}
$this->valid = false;
$this->image = @imagecreatefromstring($data);
if ($this->image !== false) {
$this->width = imagesx($this->image);
$this->height = imagesy($this->image);
$this->valid = true;
imagealphablending($this->image, false);
imagesavealpha($this->image, true);
return true;
}
return false;
}
public function is_valid() {
if ($this->is_imagick()) {
return ($this->image !== false);
}
return $this->valid;
}
public function getWidth() {
if (!$this->is_valid()) {
return false;
}
if ($this->is_imagick()) {
return $this->image->getImageWidth();
}
return $this->width;
}
public function getHeight() {
if (!$this->is_valid()) {
return false;
}
if ($this->is_imagick()) {
return $this->image->getImageHeight();
}
return $this->height;
}
public function getImage() {
if (!$this->is_valid()) {
return false;
}
if ($this->is_imagick()) {
/* Clean it */
$this->image = $this->image->deconstructImages();
return $this->image;
}
return $this->image;
}
public function getType() {
if (!$this->is_valid()) {
return false;
}
return $this->type;
}
public function getExt() {
if (!$this->is_valid()) {
return false;
}
return $this->types[$this->getType()];
}
public function scaleImage($max) {
if (!$this->is_valid()) {
return false;
}
$width = $this->getWidth();
$height = $this->getHeight();
$dest_width = $dest_height = 0;
if ((! $width)|| (! $height)) {
return false;
}
if ($width > $max && $height > $max) {
// very tall image (greater than 16:9)
// constrain the width - let the height float.
if ((($height * 9) / 16) > $width) {
$dest_width = $max;
$dest_height = intval(($height * $max) / $width);
} elseif ($width > $height) {
// else constrain both dimensions
$dest_width = $max;
$dest_height = intval(($height * $max) / $width);
} else {
$dest_width = intval(($width * $max) / $height);
$dest_height = $max;
}
} else {
if ($width > $max) {
$dest_width = $max;
$dest_height = intval(($height * $max) / $width);
} else {
if ($height > $max) {
// very tall image (greater than 16:9)
// but width is OK - don't do anything
if ((($height * 9) / 16) > $width) {
$dest_width = $width;
$dest_height = $height;
} else {
$dest_width = intval(($width * $max) / $height);
$dest_height = $max;
}
} else {
$dest_width = $width;
$dest_height = $height;
}
}
}
if ($this->is_imagick()) {
/*
* If it is not animated, there will be only one iteration here,
* so don't bother checking
*/
// Don't forget to go back to the first frame
$this->image->setFirstIterator();
do {
// FIXME - implement horizantal bias for scaling as in followin GD functions
// to allow very tall images to be constrained only horizontally.
$this->image->scaleImage($dest_width, $dest_height);
} while ($this->image->nextImage());
// These may not be necessary any more
$this->width = $this->image->getImageWidth();
$this->height = $this->image->getImageHeight();
return;
}
$dest = imagecreatetruecolor($dest_width, $dest_height);
imagealphablending($dest, false);
imagesavealpha($dest, true);
if ($this->type=='image/png') {
imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
}
imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dest_width, $dest_height, $width, $height);
if ($this->image) {
imagedestroy($this->image);
}
$this->image = $dest;
$this->width = imagesx($this->image);
$this->height = imagesy($this->image);
}
public function rotate($degrees) {
if (!$this->is_valid()) {
return false;
}
if ($this->is_imagick()) {
$this->image->setFirstIterator();
do {
$this->image->rotateImage(new ImagickPixel(), -$degrees); // ImageMagick rotates in the opposite direction of imagerotate()
} while ($this->image->nextImage());
return;
}
$this->image = imagerotate($this->image,$degrees,0);
$this->width = imagesx($this->image);
$this->height = imagesy($this->image);
}
public function flip($horiz = true, $vert = false) {
if (!$this->is_valid()) {
return false;
}
if ($this->is_imagick()) {
$this->image->setFirstIterator();
do {
if ($horiz) {
$this->image->flipImage();
}
if ($vert) {
$this->image->flopImage();
}
} while ($this->image->nextImage());
return;
}
$w = imagesx($this->image);
$h = imagesy($this->image);
$flipped = imagecreate($w, $h);
if ($horiz) {
for ($x = 0; $x < $w; $x++) {
imagecopy($flipped, $this->image, $x, 0, $w - $x - 1, 0, 1, $h);
}
}
if ($vert) {
for ($y = 0; $y < $h; $y++) {
imagecopy($flipped, $this->image, 0, $y, 0, $h - $y - 1, $w, 1);
}
}
$this->image = $flipped;
}
public function orient($filename) {
if ($this->is_imagick()) {
// based off comment on http://php.net/manual/en/imagick.getimageorientation.php
$orientation = $this->image->getImageOrientation();
switch ($orientation) {
case imagick::ORIENTATION_BOTTOMRIGHT:
$this->image->rotateimage("#000", 180);
break;
case imagick::ORIENTATION_RIGHTTOP:
$this->image->rotateimage("#000", 90);
break;
case imagick::ORIENTATION_LEFTBOTTOM:
$this->image->rotateimage("#000", -90);
break;
}
$this->image->setImageOrientation(imagick::ORIENTATION_TOPLEFT);
return true;
}
// based off comment on http://php.net/manual/en/function.imagerotate.php
if (!$this->is_valid()) {
return false;
}
if ((!function_exists('exif_read_data')) || ($this->getType() !== 'image/jpeg')) {
return;
}
$exif = @exif_read_data($filename,null,true);
if (!$exif) {
return;
}
$ort = $exif['IFD0']['Orientation'];
switch($ort)
{
case 1: // nothing
break;
case 2: // horizontal flip
$this->flip();
break;
case 3: // 180 rotate left
$this->rotate(180);
break;
case 4: // vertical flip
$this->flip(false, true);
break;
case 5: // vertical flip + 90 rotate right
$this->flip(false, true);
$this->rotate(-90);
break;
case 6: // 90 rotate right
$this->rotate(-90);
break;
case 7: // horizontal flip + 90 rotate right
$this->flip();
$this->rotate(-90);
break;
case 8: // 90 rotate left
$this->rotate(90);
break;
}
// logger('exif: ' . print_r($exif,true));
return $exif;
}
public function scaleImageUp($min) {
if (!$this->is_valid()) {
return false;
}
$width = $this->getWidth();
$height = $this->getHeight();
$dest_width = $dest_height = 0;
if ((!$width)|| (!$height)) {
return false;
}
if ($width < $min && $height < $min) {
if ($width > $height) {
$dest_width = $min;
$dest_height = intval(($height * $min) / $width);
} else {
$dest_width = intval(($width * $min) / $height);
$dest_height = $min;
}
} else {
if ($width < $min) {
$dest_width = $min;
$dest_height = intval(($height * $min) / $width);
} else {
if ($height < $min) {
$dest_width = intval(($width * $min) / $height);
$dest_height = $min;
} else {
$dest_width = $width;
$dest_height = $height;
}
}
}
if ($this->is_imagick()) {
return $this->scaleImage($dest_width, $dest_height);
}
$dest = imagecreatetruecolor($dest_width, $dest_height);
imagealphablending($dest, false);
imagesavealpha($dest, true);
if ($this->type=='image/png') {
imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
}
imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dest_width, $dest_height, $width, $height);
if ($this->image) {
imagedestroy($this->image);
}
$this->image = $dest;
$this->width = imagesx($this->image);
$this->height = imagesy($this->image);
}
public function scaleImageSquare($dim) {
if (!$this->is_valid()) {
return false;
}
if ($this->is_imagick()) {
$this->image->setFirstIterator();
do {
$this->image->scaleImage($dim, $dim);
} while ($this->image->nextImage());
return;
}
$dest = imagecreatetruecolor($dim, $dim);
imagealphablending($dest, false);
imagesavealpha($dest, true);
if ($this->type=='image/png') {
imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
}
imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dim, $dim, $this->width, $this->height);
if ($this->image) {
imagedestroy($this->image);
}
$this->image = $dest;
$this->width = imagesx($this->image);
$this->height = imagesy($this->image);
}
public function cropImage($max, $x, $y, $w, $h) {
if (!$this->is_valid()) {
return false;
}
if ($this->is_imagick()) {
$this->image->setFirstIterator();
do {
$this->image->cropImage($w, $h, $x, $y);
/*
* We need to remove the canva,
* or the image is not resized to the crop:
* http://php.net/manual/en/imagick.cropimage.php#97232
*/
$this->image->setImagePage(0, 0, 0, 0);
} while ($this->image->nextImage());
return $this->scaleImage($max);
}
$dest = imagecreatetruecolor($max, $max);
imagealphablending($dest, false);
imagesavealpha($dest, true);
if ($this->type=='image/png') {
imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
}
imagecopyresampled($dest, $this->image, 0, 0, $x, $y, $max, $max, $w, $h);
if ($this->image) {
imagedestroy($this->image);
}
$this->image = $dest;
$this->width = imagesx($this->image);
$this->height = imagesy($this->image);
}
public function saveImage($path) {
if (!$this->is_valid()) {
return false;
}
$string = $this->imageString();
$a = get_app();
$stamp1 = microtime(true);
file_put_contents($path, $string);
$a->save_timestamp($stamp1, "file");
}
public function imageString() {
if (!$this->is_valid()) {
return false;
}
if ($this->is_imagick()) {
/* Clean it */
$this->image = $this->image->deconstructImages();
$string = $this->image->getImagesBlob();
return $string;
}
$quality = false;
ob_start();
// Enable interlacing
imageinterlace($this->image, true);
switch($this->getType()){
case "image/png":
$quality = get_config('system', 'png_quality');
if ((!$quality) || ($quality > 9)) {
$quality = PNG_QUALITY;
}
imagepng($this->image, null, $quality);
break;
case "image/jpeg":
$quality = get_config('system', 'jpeg_quality');
if ((!$quality) || ($quality > 100)) {
$quality = JPEG_QUALITY;
}
imagejpeg($this->image, null, $quality);
}
$string = ob_get_contents();
ob_end_clean();
return $string;
}
public function store($uid, $cid, $rid, $filename, $album, $scale, $profile = 0, $allow_cid = '', $allow_gid = '', $deny_cid = '', $deny_gid = '') {
$r = q("SELECT `guid` FROM `photo` WHERE `resource-id` = '%s' AND `guid` != '' LIMIT 1",
dbesc($rid)
);
if (dbm::is_result($r)) {
$guid = $r[0]['guid'];
} else {
$guid = get_guid();
}
$x = q("SELECT `id` FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d AND `contact-id` = %d AND `scale` = %d LIMIT 1",
dbesc($rid),
intval($uid),
intval($cid),
intval($scale)
);
if (dbm::is_result($x)) {
$r = q("UPDATE `photo`
SET `uid` = %d,
`contact-id` = %d,
`guid` = '%s',
`resource-id` = '%s',
`created` = '%s',
`edited` = '%s',
`filename` = '%s',
`type` = '%s',
`album` = '%s',
`height` = %d,
`width` = %d,
`datasize` = %d,
`data` = '%s',
`scale` = %d,
`profile` = %d,
`allow_cid` = '%s',
`allow_gid` = '%s',
`deny_cid` = '%s',
`deny_gid` = '%s'
WHERE `id` = %d",
intval($uid),
intval($cid),
dbesc($guid),
dbesc($rid),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
dbesc(basename($filename)),
dbesc($this->getType()),
dbesc($album),
intval($this->getHeight()),
intval($this->getWidth()),
dbesc(strlen($this->imageString())),
dbesc($this->imageString()),
intval($scale),
intval($profile),
dbesc($allow_cid),
dbesc($allow_gid),
dbesc($deny_cid),
dbesc($deny_gid),
intval($x[0]['id'])
);
} else {
$r = q("INSERT INTO `photo`
(`uid`, `contact-id`, `guid`, `resource-id`, `created`, `edited`, `filename`, type, `album`, `height`, `width`, `datasize`, `data`, `scale`, `profile`, `allow_cid`, `allow_gid`, `deny_cid`, `deny_gid`)
VALUES (%d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, '%s', %d, %d, '%s', '%s', '%s', '%s')",
intval($uid),
intval($cid),
dbesc($guid),
dbesc($rid),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
dbesc(basename($filename)),
dbesc($this->getType()),
dbesc($album),
intval($this->getHeight()),
intval($this->getWidth()),
dbesc(strlen($this->imageString())),
dbesc($this->imageString()),
intval($scale),
intval($profile),
dbesc($allow_cid),
dbesc($allow_gid),
dbesc($deny_cid),
dbesc($deny_gid)
);
}
return $r;
}
}
/**
* Guess image mimetype from filename or from Content-Type header
*
* @arg $filename string Image filename
* @arg $fromcurl boolean Check Content-Type header from curl request
*/
function guess_image_type($filename, $fromcurl=false) {
logger('Photo: guess_image_type: '.$filename . ($fromcurl?' from curl headers':''), LOGGER_DEBUG);
$type = null;
if ($fromcurl) {
$a = get_app();
$headers=array();
$h = explode("\n",$a->get_curl_headers());
foreach ($h as $l) {
list($k,$v) = array_map("trim", explode(":", trim($l), 2));
$headers[$k] = $v;
}
if (array_key_exists('Content-Type', $headers))
$type = $headers['Content-Type'];
}
if (is_null($type)){
// Guessing from extension? Isn't that... dangerous?
if (class_exists('Imagick') && file_exists($filename) && is_readable($filename)) {
/**
* Well, this not much better,
* but at least it comes from the data inside the image,
* we won't be tricked by a manipulated extension
*/
$image = new Imagick($filename);
$type = $image->getImageMimeType();
$image->setInterlaceScheme(Imagick::INTERLACE_PLANE);
} else {
$ext = pathinfo($filename, PATHINFO_EXTENSION);
$types = Photo::supportedTypes();
$type = "image/jpeg";
foreach ($types as $m => $e){
if ($ext == $e) {
$type = $m;
}
}
}
}
logger('Photo: guess_image_type: type='.$type, LOGGER_DEBUG);
return $type;
}
/**
* @brief Updates the avatar links in a contact only if needed
*
* @param string $avatar Link to avatar picture
* @param int $uid User id of contact owner
* @param int $cid Contact id
* @param bool $force force picture update
*
* @return array Returns array of the different avatar sizes
*/
function update_contact_avatar($avatar, $uid, $cid, $force = false) {
$r = q("SELECT `avatar`, `photo`, `thumb`, `micro` FROM `contact` WHERE `id` = %d LIMIT 1", intval($cid));
if (!dbm::is_result($r)) {
return false;
} else {
$data = array($r[0]["photo"], $r[0]["thumb"], $r[0]["micro"]);
}
if (($r[0]["avatar"] != $avatar) OR $force) {
$photos = import_profile_photo($avatar, $uid, $cid, true);
if ($photos) {
q("UPDATE `contact` SET `avatar` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s', `avatar-date` = '%s' WHERE `id` = %d",
dbesc($avatar), dbesc($photos[0]), dbesc($photos[1]), dbesc($photos[2]),
dbesc(datetime_convert()), intval($cid));
return $photos;
}
}
return $data;
}
function import_profile_photo($photo, $uid, $cid, $quit_on_error = false) {
$r = q("SELECT `resource-id` FROM `photo` WHERE `uid` = %d AND `contact-id` = %d AND `scale` = 4 AND `album` = 'Contact Photos' LIMIT 1",
intval($uid),
intval($cid)
);
if (dbm::is_result($r) && strlen($r[0]['resource-id'])) {
$hash = $r[0]['resource-id'];
} else {
$hash = photo_new_resource();
}
$photo_failure = false;
$filename = basename($photo);
$img_str = fetch_url($photo, true);
if ($quit_on_error AND ($img_str == "")) {
return false;
}
$type = guess_image_type($photo, true);
$img = new Photo($img_str, $type);
if ($img->is_valid()) {
$img->scaleImageSquare(175);
$r = $img->store($uid, $cid, $hash, $filename, 'Contact Photos', 4);
if ($r === false)
$photo_failure = true;
$img->scaleImage(80);
$r = $img->store($uid, $cid, $hash, $filename, 'Contact Photos', 5);
if ($r === false)
$photo_failure = true;
$img->scaleImage(48);
$r = $img->store($uid, $cid, $hash, $filename, 'Contact Photos', 6);
if ($r === false) {
$photo_failure = true;
}
$photo = App::get_baseurl() . '/photo/' . $hash . '-4.' . $img->getExt();
$thumb = App::get_baseurl() . '/photo/' . $hash . '-5.' . $img->getExt();
$micro = App::get_baseurl() . '/photo/' . $hash . '-6.' . $img->getExt();
} else {
$photo_failure = true;
}
if ($photo_failure AND $quit_on_error) {
return false;
}
if ($photo_failure) {
$photo = App::get_baseurl() . '/images/person-175.jpg';
$thumb = App::get_baseurl() . '/images/person-80.jpg';
$micro = App::get_baseurl() . '/images/person-48.jpg';
}
return(array($photo,$thumb,$micro));
}
function get_photo_info($url) {
$data = array();
$data = Cache::get($url);
if (is_null($data) OR !$data OR !is_array($data)) {
$img_str = fetch_url($url, true, $redirects, 4);
$filesize = strlen($img_str);
if (function_exists("getimagesizefromstring")) {
$data = getimagesizefromstring($img_str);
} else {
$tempfile = tempnam(get_temppath(), "cache");
$a = get_app();
$stamp1 = microtime(true);
file_put_contents($tempfile, $img_str);
$a->save_timestamp($stamp1, "file");
$data = getimagesize($tempfile);
unlink($tempfile);
}
if ($data) {
$data["size"] = $filesize;
}
Cache::set($url, $data);
}
return $data;
}
function scale_image($width, $height, $max) {
$dest_width = $dest_height = 0;
if ((!$width) || (!$height)) {
return false;
}
if ($width > $max && $height > $max) {
// very tall image (greater than 16:9)
// constrain the width - let the height float.
if ((($height * 9) / 16) > $width) {
$dest_width = $max;
$dest_height = intval(($height * $max) / $width);
} elseif ($width > $height) {
// else constrain both dimensions
$dest_width = $max;
$dest_height = intval(($height * $max) / $width);
} else {
$dest_width = intval(($width * $max) / $height);
$dest_height = $max;
}
} else {
if ($width > $max) {
$dest_width = $max;
$dest_height = intval(($height * $max) / $width);
} else {
if ($height > $max) {
// very tall image (greater than 16:9)
// but width is OK - don't do anything
if ((($height * 9) / 16) > $width) {
$dest_width = $width;
$dest_height = $height;
} else {
$dest_width = intval(($width * $max) / $height);
$dest_height = $max;
}
} else {
$dest_width = $width;
$dest_height = $height;
}
}
}
return array("width" => $dest_width, "height" => $dest_height);
}
function store_photo(App $a, $uid, $imagedata = "", $url = "") {
$r = q("SELECT `user`.`nickname`, `user`.`page-flags`, `contact`.`id` FROM `user` INNER JOIN `contact` on `user`.`uid` = `contact`.`uid`
WHERE `user`.`uid` = %d AND `user`.`blocked` = 0 AND `contact`.`self` = 1 LIMIT 1",
intval($uid));
if (!dbm::is_result($r)) {
logger("Can't detect user data for uid ".$uid, LOGGER_DEBUG);
return(array());
}
$page_owner_nick = $r[0]['nickname'];
/// @TODO
/// $default_cid = $r[0]['id'];
/// $community_page = (($r[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
if ((strlen($imagedata) == 0) AND ($url == "")) {
logger("No image data and no url provided", LOGGER_DEBUG);
return(array());
} elseif (strlen($imagedata) == 0) {
logger("Uploading picture from ".$url, LOGGER_DEBUG);
$stamp1 = microtime(true);
$imagedata = @file_get_contents($url);
$a->save_timestamp($stamp1, "file");
}
$maximagesize = get_config('system', 'maximagesize');
if (($maximagesize) && (strlen($imagedata) > $maximagesize)) {
logger("Image exceeds size limit of ".$maximagesize, LOGGER_DEBUG);
return(array());
}
/*
$r = q("select sum(octet_length(data)) as total from photo where uid = %d and scale = 0 and album != 'Contact Photos' ",
intval($uid)
);
$limit = service_class_fetch($uid,'photo_upload_limit');
if (($limit !== false) && (($r[0]['total'] + strlen($imagedata)) > $limit)) {
logger("Image exceeds personal limit of uid ".$uid, LOGGER_DEBUG);
return(array());
}
*/
$tempfile = tempnam(get_temppath(), "cache");
$stamp1 = microtime(true);
file_put_contents($tempfile, $imagedata);
$a->save_timestamp($stamp1, "file");
$data = getimagesize($tempfile);
if (!isset($data["mime"])) {
unlink($tempfile);
logger("File is no picture", LOGGER_DEBUG);
return(array());
}
$ph = new Photo($imagedata, $data["mime"]);
if (!$ph->is_valid()) {
unlink($tempfile);
logger("Picture is no valid picture", LOGGER_DEBUG);
return(array());
}
$ph->orient($tempfile);
unlink($tempfile);
$max_length = get_config('system', 'max_image_length');
if (! $max_length) {
$max_length = MAX_IMAGE_LENGTH;
}
if ($max_length > 0) {
$ph->scaleImage($max_length);
}
$width = $ph->getWidth();
$height = $ph->getHeight();
$hash = photo_new_resource();
$smallest = 0;
// Pictures are always public by now
//$defperm = '<'.$default_cid.'>';
$defperm = "";
$visitor = 0;
$r = $ph->store($uid, $visitor, $hash, $tempfile, t('Wall Photos'), 0, 0, $defperm);
if (!$r) {
logger("Picture couldn't be stored", LOGGER_DEBUG);
return(array());
}
$image = array("page" => App::get_baseurl().'/photos/'.$page_owner_nick.'/image/'.$hash,
"full" => App::get_baseurl()."/photo/{$hash}-0.".$ph->getExt());
if ($width > 800 || $height > 800) {
$image["large"] = App::get_baseurl()."/photo/{$hash}-0.".$ph->getExt();
}
if ($width > 640 || $height > 640) {
$ph->scaleImage(640);
$r = $ph->store($uid, $visitor, $hash, $tempfile, t('Wall Photos'), 1, 0, $defperm);
if ($r) {
$image["medium"] = App::get_baseurl()."/photo/{$hash}-1.".$ph->getExt();
}
}
if ($width > 320 || $height > 320) {
$ph->scaleImage(320);
$r = $ph->store($uid, $visitor, $hash, $tempfile, t('Wall Photos'), 2, 0, $defperm);
if ($r) {
$image["small"] = App::get_baseurl()."/photo/{$hash}-2.".$ph->getExt();
}
}
if ($width > 160 AND $height > 160) {
$x = 0;
$y = 0;
$min = $ph->getWidth();
if ($min > 160) {
$x = ($min - 160) / 2;
}
if ($ph->getHeight() < $min) {
$min = $ph->getHeight();
if ($min > 160) {
$y = ($min - 160) / 2;
}
}
$min = 160;
$ph->cropImage(160, $x, $y, $min, $min);
$r = $ph->store($uid, $visitor, $hash, $tempfile, t('Wall Photos'), 3, 0, $defperm);
if ($r) {
$image["thumb"] = App::get_baseurl()."/photo/{$hash}-3.".$ph->getExt();
}
}
// Set the full image as preview image. This will be overwritten, if the picture is larger than 640.
$image["preview"] = $image["full"];
// Deactivated, since that would result in a cropped preview, if the picture wasn't larger than 320
//if (isset($image["thumb"]))
// $image["preview"] = $image["thumb"];
// Unsure, if this should be activated or deactivated
//if (isset($image["small"]))
// $image["preview"] = $image["small"];
if (isset($image["medium"])) {
$image["preview"] = $image["medium"];
}
return($image);
}