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getbytes fromoffset length error Wytopitlock, Maine

If an error occurs, returns 0.DiscussionThis method returns the biggest, best representation available.NoteIn iOS 8 and later, use the Photos framework to access different versions and sizes of a photo asset. Source code on GitHub. Modern digital cameras read their camera sensor one specific way, if the user rotates his camera an accelleration sensor picks that up and the logic writes an orientation tag to the More.

You signed in with another tab or window. Those with the odd giant image themes can always switch to full size images. current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list. Video's on the other hand can be tricky if you do it the wrong way like I've experienced.

This means reading high-res versions of images from the camera roll, but not blowing our memory limits if the user selects a 30MP monstrosity. Answers to Frequently Asked Questions. Join them; it only takes a minute: Sign up Use ALAssetRepresentation getBytes:fromOffset:length:error: but with correct orientation up vote 1 down vote favorite High level here is what I am trying to Xamarin Menu Products Xamarin Platform C# on iOS, Android, Mac & Windows Xamarin Test Cloud Find bugs before your users do Xamarin Insights Improve your apps with real-time monitoring Xamarin University

and what Apple doesn't tell you (at least directly). Copyright © 2016 Apple Inc. That's much better but still cumbersome. That is, for photos taken on an iOS 8 device with a filter, -[ALAssetRepresentation getBytes:fromOffset:length:error:] is returning photo content equivalent to PHImageRequestOptionsVersionCurrent.

This code is ARC; if you need non-ARC code, just remove the two __bridge annotations.) To test this out, we ran some experiments with a 6019×6019 image from NASA. (You know Now, under the iOS 8 SDK, this call returns flattened image content. Blog Contact Import video from ALAsset 8 January 2013 One of the main features of my recent app Classified is importing photo's and video's. Repeat steps (1) and (2) by deploying to a device running iOS 7.

Ok you might think: "This is easy, I'll load the image from the assets library by using core graphics to avoid beeing bombed out by a memory warning and then apply We use CGDataProviderCreateDirect, passing a small set of functions used to retrieve the image data[1]. Could Apple not just filter out the geo-tags when the user declined? License.

Memory constraints With the first iPad Apple introduced the camera connection kit (CCK) because the cloud solutions provided by Apple and others were not in the usable shape they are now. You signed out in another tab or window. Terms of Use Privacy Policy Report Bugs Feedback Home | Recent Comments | Sign in Open Radar Community bug reports iOS 8 GM: -[ALAssetRepresentation getBytes:fromOffset:length:error:] returns adjusted image content, sometimes Xamarin Inc., as a wholly-owned Microsoft subsidiary acting as a separate legal entity, adheres to the Microsoft Privacy Statement: Privacy & cookies Home Subscribe Dunkelstern Braindump 11 June 2014 on Apple,

Personal Open source Business Explore Sign up Sign in Pricing Blog Support Search GitHub This repository Watch 126 Star 1,500 Fork 597 wordpress-mobile/WordPress-iOS Code Issues 467 Pull requests 4 Projects Like so: (This is designed to live in an existing class; you'll also need to add the AssetsLibrary and ImageIO frameworks to your project. Hot Network Questions Why (in universe) are blade runners called blade runners? Limit size to 2048x2048 pixels.

More aggressive JPEG compression. Expected Results: The image data returned by -[ALAssetRepresentation getBytes:fromOffset:length:error:] on iOS 8 should match what is returned on iOS 7. I chose 2048 since it'll allow for full width retina images on most themes. Thank you!

I’m Damir Tursunovic, an iOS developer in the Netherlands. The example below assumes you already have an ALAsset you wish to add to your activity controller. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 lengthParameter : remaining; Byte *buffer = (Byte *)malloc(length); NSError *error; NSUInteger buffered = [self.assetRepresentation getBytes:buffer fromOffset:offset length:length error:&error]; NSLog(@"Error: %@",[error localizedDescription]); NSData *data = [NSData dataWithBytesNoCopy:buffer length:buffered freeWhenDone:YES]; // now that Open the camera app and take a photo with a filter applied. 2.

You could fetch that orientation information from the ALAssetRepresentation and rotate the image by yourself (or just initialize an UIImage with its imageWithCGImage:scale:orientation: initializer and tell it the orientation) or you Except... As soon as I do that, it eliminates my ability to use that handy ALAssetRepresentation getBytes:fromOffset:length:error: method. This is a well known issue but the solutions generally seem to require creating a CGImage or UIImage from the ALAssetRepresentation.

To connect these things together, all it takes is a bit of glue code to wrap up the ALAssetReprentation as a CGDataProviderRef, and wrap that into a CGImageSourceRef. Are leet passwords easily crackable? This seems to happen if you make the call shortly after taking the photo. Please only post information for Radars that you have filed yourself, and please do not include Apple confidential information in your posts.

Implementation of a generic List True or False? The asset already provides several versions of the original image: A thumbnail: [asset thumbnail]; An aspect-correct thumbnail: [asset aspectCorrectThumbnail]; A full-resolution image: [[asset defaultRepresentation] fullResolutionImage]; An image suitable for displaying fullscreen: This breaks forward compatibility of the AssetsLibrary API and leaves developers without a mechanism to access full photo content using the iOS 7 SDK. He also enjoys tinkering with his piano and playing electric guitar.

You can write/copy the video directly from the source path to your destination path without loading the entire video into your memory. // Create a file handle to write the file Resize the image, combine with CGImageDestination (so we can set the compression factor), return data. By default, the UIImagePickerController hands you a UIImage, but since we want to control the size more closely, we have to make use of the UIImagePickerControllerReferenceURL it provides to get access Tinkers with electronics and 3D-Printers, loves low-level stuff.

Apple implemented various ways for you to get your hands on the image data in iOS 3 and 4 but the problem with that was privacy concerns, not about the image Version: 8.0 (12A365) Notes: Configuration: iPhone 5 Attachments: 'SPPhotoLibraryData.zip' was successfully uploaded. He wrote a short 400 pages book on Borland Delphi and dedicated the book to Borland. Right now, when the user selects an image the app does this: Get the ALAssetRepresentation from ALAsset Convert the full-res CGImageRefto a UIImage Resize the image, which involves getting a CGImageRef

If you look to Core Image closely you'll see the following function pop out: CIFilter filterArrayFromSerializedXMP:inputImageExtent:error: So this will return an Array of CIFilter instances to apply all filters that the By stephenpoletto at Sept. 15, 2014, 9:02 p.m. (reply...) Note that this problem is made worse by the fact that sometimes this call returns the flattened content, not in high resolution Sometimes the users did not directly recognize why the app needs access and denied, so the programmers had to include instructions how to re-enable access. The right way: NSFileHandle The solution is to use NSFileHandle.

All rights reserved. The most obvious one is to use the UIImagePickerController.