CGImageSourceCopyPropertiesAtIndex(_:_:_:)
Returns the properties of the image at a specified location in an image source.
Declaration
func CGImageSourceCopyPropertiesAtIndex(_ isrc: CGImageSource, _ index: Int, _ options: CFDictionary?) -> CFDictionary?Parameters
- isrc:
The image source that contains the image data.
- index:
The zero-based index into the images of the image source. If the index is invalid, this method returns
NULL. - options:
A dictionary you can use to request additional options. For a list of possible values, see Cgimagesource.
Return Value
A dictionary that contains the properties associated with the image. See CGImageProperties for a list of properties that allowed in the dictionary.