# FxParameterRetrievalAPI_v7 Adds a method to retrieve the image information about an image parameter. ``` protocol FxParameterRetrievalAPI_v7 : FxParameterRetrievalAPI_v6 ``` ## Topics ### Instance Methods [`func imageSize(UnsafeMutablePointer, fromParameter: UInt32, at: CMTime) throws`](/documentation/professional_video_applications/FxParameterRetrievalAPI_v7/imageSize(_:fromParameter:at:)) Provides the dimensions of the image well image when it is at 100-percent scale and has square pixels. ## Relationships ### Inherits From [`FxParameterRetrievalAPI_v6`](/documentation/professional_video_applications/FxParameterRetrievalAPI_v6) [`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)