[
https://issues.apache.org/jira/browse/CB-13950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16388676#comment-16388676
]
Junran commented on CB-13950:
-----------------------------
I have changed the following function to keep the exif data when using
File_URI, please use or make change as you see fit, any other suggestion or
improvement is most welcome too:
- (NSData*)processImage:(UIImage*)image info:(NSDictionary*)info
options:(CDVPictureOptions*)options
{
NSData* data = nil;
switch (options.encodingType) {
case EncodingTypePNG:
data = UIImagePNGRepresentation(image);
break;
case EncodingTypeJPEG:
{
if ((options.allowsEditing == NO) && (options.targetSize.width <=
0) && (options.targetSize.height <= 0) && (options.correctOrientation == NO) &&
(([options.quality integerValue] == 100) || (options.sourceType !=
UIImagePickerControllerSourceTypeCamera))){
// use image unedited as requested , don't resize
data = UIImageJPEGRepresentation(image, 1.0);
} else {
data = UIImageJPEGRepresentation(image, [options.quality
floatValue] / 100.0f);
}
//if (options.usesGeolocation) {
NSURL *assetURL = [info
objectForKey:UIImagePickerControllerReferenceURL];
//NSDictionary *metadata =[info
objectForKey:UIImagePickerControllerMediaMetadata];
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
dispatch_semaphore_t sema = dispatch_semaphore_create(0);
dispatch_queue_t queue =
dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0);
dispatch_async(queue, ^{[library assetForURL:assetURL
resultBlock:^(ALAsset *asset) {
NSDictionary *controllerMetadata =
asset.defaultRepresentation.metadata;
//NSLog(@"metadatacontrol %@", controllerMetadata);
//NSDictionary* controllerMetadata = [info
objectForKey:@"UIImagePickerControllerMediaMetadata"];
if (controllerMetadata) {
self.data = data;
self.metadata = [[NSMutableDictionary alloc] init];
NSMutableDictionary *metadataAsMutable =
[controllerMetadata mutableCopy];
//NSMutableDictionary* EXIFDictionary =
[[metadataAsMutable
objectForKey:(NSString*)kCGImagePropertyExifDictionary]mutableCopy];
NSMutableDictionary *EXIFDictionary =
[[metadataAsMutable objectForKey:(NSString
*)kCGImagePropertyExifDictionary]mutableCopy];
NSMutableDictionary *GPSDictionary =
[[metadataAsMutable objectForKey:(NSString
*)kCGImagePropertyGPSDictionary]mutableCopy];
NSMutableDictionary *RAWDictionary =
[[metadataAsMutable objectForKey:(NSString
*)kCGImagePropertyRawDictionary]mutableCopy];
if(!EXIFDictionary)
EXIFDictionary = [[NSMutableDictionary dictionary]
init];
if(!GPSDictionary)
GPSDictionary = [[NSMutableDictionary dictionary]
init];
if(!RAWDictionary)
RAWDictionary = [[NSMutableDictionary dictionary]
init];
//Add the modified Data back into the image’s metadata
[self.metadata setObject:EXIFDictionary
forKey:(NSString *)kCGImagePropertyExifDictionary];
[self.metadata setObject:GPSDictionary forKey:(NSString
*)kCGImagePropertyGPSDictionary];
[self.metadata setObject:RAWDictionary forKey:(NSString
*)kCGImagePropertyRawDictionary];
//NSLog(@"enter gpsdictionary %@", GPSDictionary);
//NSLog(@"enter exifdictionary %@", EXIFDictionary);
//NSLog(@"enter rawdictionary %@", RAWDictionary);
//NSLog(@"enter self.metadata %@", self.metadata);
if (self.metadata) {
//this will be the data CGImageDestinationRef will
write into
NSMutableData *newImageData = [NSMutableData data];
CGImageSourceRef sourceImage =
CGImageSourceCreateWithData((__bridge CFDataRef)self.data, NULL);
CFStringRef sourceType =
CGImageSourceGetType(sourceImage);
CGImageDestinationRef destinationImage =
CGImageDestinationCreateWithData((__bridge CFMutableDataRef)newImageData,
sourceType, 1, NULL);
CGImageDestinationAddImageFromSource(destinationImage, sourceImage, 0,
(__bridge CFDictionaryRef)self.metadata);
CGImageDestinationFinalize(destinationImage);
//CIImage *testImage = [CIImage
imageWithData:newImageData];
self.data = newImageData;
CFRelease(sourceImage);
CFRelease(destinationImage);
dispatch_semaphore_signal(sema);
}
//if (EXIFDictionary) {NSLog(@"enter exifdictionary
%@", EXIFDictionary);
// [self.metadata setObject:EXIFDictionary
forKey:(NSString*)kCGImagePropertyExifDictionary];
//}
//if (IsAtLeastiOSVersion(@"8.0")) {
// [[self locationManager]
performSelector:NSSelectorFromString(@"requestWhenInUseAuthorization")
withObject:nil afterDelay:0];
//}
//[[self locationManager] startUpdatingLocation];
}
} failureBlock:^(NSError *error) {
dispatch_semaphore_signal(sema);
}];
});
dispatch_semaphore_wait(sema, DISPATCH_TIME_FOREVER);
return self.data;
//}
}
break;
default:
break;
};
return data;
}
> All Exif data is stripped off under iOS when Camera.DestinationType is
> File_URI
> -------------------------------------------------------------------------------
>
> Key: CB-13950
> URL: https://issues.apache.org/jira/browse/CB-13950
> Project: Apache Cordova
> Issue Type: Bug
> Components: cordova-plugin-camera
> Affects Versions: cordova-ios 4.5.0
> Reporter: Junran
> Priority: Major
>
> When Camera.DestinationType is File_URI
> All exif metadata is stripped off under iOS
> This is inconsistent with what it is under Android. It seems the code have
> implemented to reattached the exif metadata when writing to temporary file
> path, but it doesn't work.
> A way to retain the exif data when using File_URI under iOS is needed.
> Any idea is much appreciated. Thanks!
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