harmony 鸿蒙OH_Pixelmap_HdrGainmapMetadata
OH_Pixelmap_HdrGainmapMetadata
Overview
The OH_Pixelmap_HdrGainmapMetadata struct describes the gain map metadata values available for the key HDR_GAINMAP_METADATA. For details, see ISO 21496-1.
Since: 12
Related module: Image_NativeModule
Header file: pixelmap_native.h
Summary
Member Variables
| Name | Description |
|---|---|
| uint16_t writerVersion | Version used by the metadata editor. |
| uint16_t miniVersion | Minimum version that needs to be understood for metadata parsing. |
| uint8_t gainmapChannelNum | Number of color channels of the gain map. When the value is 3, the metadata values of the RGB channels are different. When the value is 1, the metadata values of the RGB channels are the same. |
| bool useBaseColorFlag | Whether to use the color space of the base graphic. For details, see ISO 21496-1. |
| float baseHeadroom | Headroom of the base graphic, which means the additional brightness that can be added to the base graphic. For details, see ISO 21496-1. |
| float alternateHeadroom | Headroom of the alternate graphic. For details, see ISO 21496-1. |
| float gainmapMax[3] | Maximum value of the gain map. For details, see ISO 21496-1. |
| float gainmapMin[3] | Minimum value of the gain map. For details, see ISO 21496-1. |
| float gamma[3] | Gamma. For details, see ISO 21496-1. |
| float baselineOffset[3] | Offset of the base graphic. For details, see ISO 21496-1. |
| float alternateOffset[3] | Offset of the alternative graphic that can be extracted. For details, see ISO 21496-1. |
Member Variable Description
alternateHeadroom
float OH_Pixelmap_HdrGainmapMetadata::alternateHeadroom
Description
Headroom of the alternate graphic. For details, see ISO 21496-1.
alternateOffset
float OH_Pixelmap_HdrGainmapMetadata::alternateOffset[3]
Description
Offset of the alternative graphic that can be extracted. For details, see ISO 21496-1.
baseHeadroom
float OH_Pixelmap_HdrGainmapMetadata::baseHeadroom
Description
Headroom of the base graphic, which means the additional brightness that can be added to the base graphic. For details, see ISO 21496-1.
baselineOffset
float OH_Pixelmap_HdrGainmapMetadata::baselineOffset[3]
Description
Offset of the base graphic. For details, see ISO 21496-1.
gainmapChannelNum
uint8_t OH_Pixelmap_HdrGainmapMetadata::gainmapChannelNum
Description
Number of color channels of the gain map. When the value is 3, the metadata values of the RGB channels are different. When the value is 1, the metadata values of the RGB channels are the same.
gainmapMax
float OH_Pixelmap_HdrGainmapMetadata::gainmapMax[3]
Description
Maximum value of the gain map. For details, see ISO 21496-1.
gainmapMin
float OH_Pixelmap_HdrGainmapMetadata::gainmapMin[3]
Description
Minimum value of the gain map. For details, see ISO 21496-1.
gamma
float OH_Pixelmap_HdrGainmapMetadata::gamma[3]
Description
Gamma. For details, see ISO 21496-1.
miniVersion
uint16_t OH_Pixelmap_HdrGainmapMetadata::miniVersion
Description
Minimum version that needs to be understood for metadata parsing.
useBaseColorFlag
bool OH_Pixelmap_HdrGainmapMetadata::useBaseColorFlag
Description
Whether to use the color space of the base graphic. For details, see ISO 21496-1.
writerVersion
uint16_t OH_Pixelmap_HdrGainmapMetadata::writerVersion
Description
Version used by the metadata editor.
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