Struct AvifContext 

pub struct AvifContext {
    pub premultiplied_alpha: bool,
    pub major_brand: FourCC,
    pub sequence: Option<MediaContext>,
    pub unsupported_features: UnsupportedFeatures,
    /* private fields */
}

Fields

premultiplied_alpha: bool

If true, divide RGB values by the alpha value. See prem in MIAF (ISO 23000-22:2019) § 7.3.5.2

major_brand: FourCC

Should probably only ever be AVIF_BRAND or AVIS_BRAND, but other values are legal as long as one of the two is the compatible_brand list.

sequence: Option<MediaContext>

Information on the sequence contained in the image, or None if not present

unsupported_features: UnsupportedFeatures

A collection of unsupported features encountered during the parse

Implementations

impl AvifContext

pub fn primary_item_is_present(&self) -> bool

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

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

pub fn alpha_item_is_present(&self) -> bool

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

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

pub fn spatial_extents_ptr(&self) -> Result<*const ImageSpatialExtentsProperty>

pub fn nclx_colour_information_ptr( &self, ) -> Option<Result<*const NclxColourInformation>>

Returns None if there is no primary item or it has no associated NCLX colour boxes.

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

Returns None if there is no primary item or it has no associated ICC colour boxes.

pub fn image_rotation(&self) -> Result<ImageRotation>

pub fn image_mirror_ptr(&self) -> Result<*const ImageMirror>

pub fn pixel_aspect_ratio_ptr(&self) -> Result<*const PixelAspectRatio>

Trait Implementations

impl Debug for AvifContext

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for AvifContext

fn default() -> AvifContext

Returns the “default value” for a type.