# accessUnsafeMutableRawPlaneBytes(_:) Access the pixels in the planes contained within this buffer. The base address is locked for writing during the execution of the block. ``` mutating func accessUnsafeMutableRawPlaneBytes(_ block: ([(properties: CVPixelBufferPlaneProperties, bytes: UnsafeMutableRawBufferPointer)]) throws -> sending R) rethrows -> sending R ``` --- 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)