# CMSwapBigEndianMetadataDescriptionToHost(_:_:) Converts a metadata description data structure from big-endian to host-endian, in place. ``` func CMSwapBigEndianMetadataDescriptionToHost(_ metadataDescriptionData: UnsafeMutablePointer, _ metadataDescriptionSize: Int) -> OSStatus ``` ## Parameters `metadataDescriptionData` MetadataDescription data structure in big-endian byte ordering to be converted to host-endian byte ordering. `metadataDescriptionSize` Size of MetadataDescription data structure. ## Discussion --- 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)