function fix_orientation($source, $name)
{
$imginfo = getimagesize($source);
$requiredMemory1 = ceil($imginfo[0] * $imginfo[1] * 5.35);
$requiredMemory2 = ceil($imginfo[0] * $imginfo[1] * ($imginfo['bits'] / 8) * $imginfo['channels'] * 2.5);
$requiredMemory = (int) max($requiredMemory1, $requiredMemory2);
$mem_avail = elgg_get_ini_setting_in_bytes('memory_limit');
$mem_used = memory_get_usage();
$mem_avail = $mem_avail - $mem_used - 2097152;
// 2 MB buffer
if ($requiredMemory > $mem_avail) {
// we don't have enough memory for any manipulation
// @TODO - we should only throw an error if the image needs rotating...
//register_error(elgg_echo('image_orientation:toolarge'));
return false;
}
elgg_load_library('imagine');
$name = uniqid() . $name;
$tmp_location = elgg_get_config('dataroot') . 'image_orientation/' . $name;
//@note - need to copy to a tmp_location as
// imagine doesn't like images with no file extension
copy($source, $tmp_location);
try {
$imagine = new Imagine();
$imagine->setMetadataReader(new ExifMetadataReader());
$autorotate = new Autorotate();
$autorotate->apply($imagine->open($tmp_location))->save($tmp_location);
copy($tmp_location, $source);
unlink($tmp_location);
return true;
} catch (Imagine\Exception\Exception $exc) {
// fail silently, we don't need to rotate it bad enough to kill the script
return false;
}
}
/**
* @dataProvider provideMetadataAndRotations
*/
public function testApply($expectedRotation, MetadataBag $metadata)
{
$image = $this->getImage();
$image->expects($this->any())->method('metadata')->will($this->returnValue($metadata));
if (null === $expectedRotation) {
$image->expects($this->never())->method('rotate');
} else {
$image->expects($this->once())->method('rotate')->with($expectedRotation);
}
$filter = new Autorotate($this->getColor());
$filter->apply($image);
}
