Struct Decoder 

pub struct Decoder<'a> { /* private fields */ }

Ultra HDR decoder.

Decodes Ultra HDR JPEGs, extracting the SDR base image, gain map, and metadata. Can reconstruct HDR content at various display brightness levels.

The decoder borrows the input data to avoid an unconditional copy.

Implementations

impl<'a> Decoder<'a>

pub fn new(data: &'a [u8]) -> Result<Self>

Create a new decoder from JPEG data.

The decoder borrows the data — no copy is made.

pub fn is_ultrahdr(&self) -> bool

Check if this is a valid Ultra HDR image.

pub fn metadata(&self) -> Option<&GainMapMetadata>

Get the gain map metadata.

pub fn primary_jpeg(&self) -> Option<&[u8]>

Get the raw primary (SDR base) JPEG data.

Use this to decode the base image with your own JPEG codec.

pub fn gainmap_jpeg(&self) -> Option<&[u8]>

Get the raw gain map JPEG data.

Use this to decode the gain map with your own JPEG codec.

pub fn decode_sdr(&self) -> Result<RawImage>

Decode the SDR base image.

This method is not available in the library. Access the raw JPEG bytes via Decoder::primary_jpeg and decode with your own codec.

pub fn decode_gainmap(&self) -> Result<GainMap>

Decode the gain map.

This method is not available in the library. Access the raw JPEG bytes via Decoder::gainmap_jpeg and decode with your own codec.

pub fn icc_profile(&self) -> Option<Vec<u8>>

Get the ICC profile from the primary image if present.