SBSDKImageMetadataProcessor

@interface SBSDKImageMetadataProcessor : NSObject

Helper class to extract image metadata, e.g. EXIF, TIFF, JFIF from any images data. Be cautious: changing an images metadata can break it, e.g. by setting wrong width or height.

Example usage:

  1. Use UIImageJPEGRepresentation(UIImage *image, CGFloat compressionFactor) to get the NSData object from an UIImage.

  2. Call SBSDKImageMetadataProcessor method extractMetadataFromImageData: to retrieve a SBSDKImageMetadata object from the image data.

  3. Modify the metadata object as needed.

  4. Call SBSDKImageMetadataProcessor method imageDataByInjectingMetadata to inject the modified metadata into the image data.

  5. Create a new UIImage object from the returned image data using UIImage(data:) constructor with the modified metadata.

  • Extracts an images metadata (EXIF, TIFF, JFIF etc.) from an NSData object.

    Declaration

    Objective-C

    + (nullable SBSDKImageMetadata *)extractMetadataFromImageData:
    (nullable NSData *)imageData;

    Swift

    class func extractMetadata(fromImageData imageData: Data?) -> SBSDKImageMetadata?

    Parameters

    imageData

    The NSData object containing an images data.

    Return Value

    An SBSDKImageMetadata object containing the images metadata.

  • Merges image data and (modified) image metadata and creates a new NSData object that can be used to create a new image.

    Declaration

    Objective-C

    + (nullable NSData *)imageDataByInjectingMetadata:
                         (nonnull SBSDKImageMetadata *)metadata
                                    intoImageData:(nullable NSData *)imageData;

    Swift

    class func imageData(byInjecting metadata: SBSDKImageMetadata, intoImageData imageData: Data?) -> Data?

    Parameters

    metadata

    The (modified) metadata object to be used for the new image data object.
    imageData

    The image data of the image to inject the metadata into.

    Return Value

    An NSData object containing the given image data and metadata. Can be used to create a new UIImage.