---
title: "hdr10(displayInfo:contentInfo:opticalOutputScale:)"
framework: quartzcore
role: symbol
role_heading: Type Method
path: "quartzcore/caedrmetadata/hdr10(displayinfo:contentinfo:opticaloutputscale:)"
---

# hdr10(displayInfo:contentInfo:opticalOutputScale:)

Creates EDR metadata for HDR10 content based on mastering display color information and content light levels.

## Declaration

```swift
class func hdr10(displayInfo displayData: Data?, contentInfo contentData: Data?, opticalOutputScale scale: Float) -> CAEDRMetadata
```

## Parameters

- `displayData`: A value of 24 bytes that contains a big-endian structure, as defined in D.2.28 (Mastering Display Colour Volume SEI message).
- `contentData`: A value of 4 bytes that contains a big-endian structure, as defined in D.2.35 (Content Light Level Information SEI message).
- `scale`: A scale factor relating (display-referred linear) EDR values to the optical output of the reference display.

## Discussion

Discussion The MDCV and CLLI message formats are defined in ISO/IEC 23008-2:2017. The values in the drawable’s texture are assumed to be proportional to the optical output (in cd/m^2) of the reference display. For example, if the optical output scale is 100, then a value of 1.0 is assumed to be 100 nits.

## See Also

### Retrieving HDR10 Metadata

- [hdr10(minLuminance:maxLuminance:opticalOutputScale:)](quartzcore/caedrmetadata/hdr10(minluminance:maxluminance:opticaloutputscale:).md)