Enum jpeg_decoder::UnsupportedFeature

source · [−]
pub enum UnsupportedFeature {
    Hierarchical,
    Lossless,
    ArithmeticEntropyCoding,
    SamplePrecision(u8),
    ComponentCount(u8),
    DNL,
    SubsamplingRatio,
    NonIntegerSubsamplingRatio,
}
Expand description

An enumeration over JPEG features (currently) unsupported by this library.

Support for features listed here may be included in future versions of this library.

Variants

Hierarchical

Hierarchical JPEG.

Lossless

Lossless JPEG.

ArithmeticEntropyCoding

JPEG using arithmetic entropy coding instead of Huffman coding.

SamplePrecision(u8)

Sample precision in bits. 8 bit sample precision is what is currently supported.

ComponentCount(u8)

Number of components in an image. 1, 3 and 4 components are currently supported.

DNL

An image can specify a zero height in the frame header and use the DNL (Define Number of Lines) marker at the end of the first scan to define the number of lines in the frame.

SubsamplingRatio

Subsampling ratio.

NonIntegerSubsamplingRatio

A subsampling ratio not representable as an integer.

Trait Implementations

Formats the value using the given formatter. Read more

Auto Trait Implementations

Blanket Implementations

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Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.