1# Types 2<!--Kit: Image Kit--> 3<!--Subsystem: Multimedia--> 4<!--Owner: @aulight02--> 5<!--SE: @liyang_bryan--> 6<!--TSE: @xchaosioda--> 7 8> **NOTE** 9> 10> The initial APIs of this module are supported since API version 6. Newly added APIs will be marked with a superscript to indicate their earliest API version. 11 12## HdrMetadataValue<sup>12+</sup> 13 14type HdrMetadataValue = HdrMetadataType | HdrStaticMetadata | ArrayBuffer | HdrGainmapMetadata 15 16Describes the HDR metadata values used by a PixelMap, which corresponds to the values available for [HdrMetadataKey](arkts-apis-image-e.md#hdrmetadatakey12). 17 18**System capability**: SystemCapability.Multimedia.Image.Core 19 20| Type | Description | 21| ------------------- | ----------------------------------------------- | 22| [HdrMetadataType](arkts-apis-image-e.md#hdrmetadatatype12) | Metadata value corresponding to the **HDR_GAINMAP_METADATA** key in [HdrMetadataKey](arkts-apis-image-e.md#hdrmetadatakey12).| 23| [HdrStaticMetadata](arkts-apis-image-i.md#hdrstaticmetadata12) | Metadata value corresponding to the **HDR_STATIC_METADATA** key in [HdrMetadataKey](arkts-apis-image-e.md#hdrmetadatakey12).| 24| ArrayBuffer | Metadata value corresponding to the **HDR_DYNAMIC_METADATA** key in [HdrMetadataKey](arkts-apis-image-e.md#hdrmetadatakey12).| 25| [HdrGainmapMetadata](arkts-apis-image-i.md#hdrgainmapmetadata12) | Metadata value corresponding to the **HDR_GAINMAP_METADATA** key in [HdrMetadataKey](arkts-apis-image-e.md#hdrmetadatakey12).| 26