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Fix avatar on exif rotated images 

Fixes #1928

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>
This commit is contained in:
Roeland Jago Douma 2016-10-26 21:36:33 +02:00
parent b98dfaccd9
commit b05fe45d52
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2 changed files with 28 additions and 0 deletions
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1
core/Controller/AvatarController.php
View File

@ -237,6 +237,7 @@ class AvatarController extends Controller {
try {
$image = new \OC_Image();
$image->loadFromData($content);
$image->readExif($content);
$image->fixOrientation();
if ($image->valid()) {

27
lib/private/legacy/image.php
View File

@ -54,6 +54,8 @@ class OC_Image implements \OCP\IImage {
private $fileInfo;
/** @var \OCP\ILogger */
private $logger;
/** @var array */
private $exif;
/**
* Get mime type for an image file.
@ -347,6 +349,10 @@ class OC_Image implements \OCP\IImage {
* @return int The orientation or -1 if no EXIF data is available.
*/
public function getOrientation() {
if ($this->exif !== null) {
return $this->exif['Orientation'];
}
if ($this->imageType !== IMAGETYPE_JPEG) {
$this->logger->debug('OC_Image->fixOrientation() Image is not a JPEG.', array('app' => 'core'));
return -1;
@ -370,9 +376,30 @@ class OC_Image implements \OCP\IImage {
if (!isset($exif['Orientation'])) {
return -1;
}
$this->exif = $exif;
return $exif['Orientation'];
}
public function readExif($data) {
if (!is_callable('exif_read_data')) {
$this->logger->debug('OC_Image->fixOrientation() Exif module not enabled.', array('app' => 'core'));
return;
}
if (!$this->valid()) {
$this->logger->debug('OC_Image->fixOrientation() No image loaded.', array('app' => 'core'));
return;
}
$exif = @exif_read_data('data://image/jpeg;base64,' . base64_encode($data));
if (!$exif) {
return;
}
if (!isset($exif['Orientation'])) {
return;
}
$this->exif = $exif;
}
/**
* (I'm open for suggestions on better method name ;)
* Fixes orientation based on EXIF data.