Crate lerc_core 

Shared types and errors for pure-Rust LERC codecs.

Macros

dispatch_data_type

Dispatches a runtime DataType to a concrete primitive type alias.

Structs

BandSetInfo

Validated metadata for a concatenated set of same-shaped LERC bands.

BandSetView

Borrowed, dimension-checked view of a multi-band raster.

BlobInfo

Validated metadata for one LERC blob.

MaskView

Borrowed, dimension-checked validity mask; zero is invalid and nonzero is valid.

RasterView

Borrowed, dimension-checked view of one pixel-interleaved raster band.

Enums

BandLayout

Memory layout for a multi-band raster.

DataType

Primitive numeric representations supported by the LERC format.

Error

Errors returned while validating, decoding, or encoding LERC data.

MaskEncoding

How a decoded blob represents pixel validity.

PixelData

Owned homogeneous pixel samples with their runtime numeric type.

Version

LERC format family and encoded version number.

Traits

Sample

Primitive sample types supported by LERC.

Functions

append_value_as

Converts and appends one scalar in the requested little-endian representation.

bits_required

Returns the minimum bit width needed to represent max_index.

coerce_f64_to_data_type

Rounds or truncates an f64 through the specified primitive representation.

count_valid_in_block

Counts valid mask entries in a rectangular row-major block.

fletcher32

Computes the Fletcher-32 checksum variant used by Lerc2.

output_value

Converts a decoded value to an output sample while preserving source-type rounding.

pixel_count_from_dims

Computes width * height using checked, platform-portable arithmetic.

read_scalar

Reads one little-endian scalar and promotes it to f64.

read_typed_values

Reads an aligned little-endian sample buffer as promoted f64 values.

read_values_as

Decodes little-endian samples and converts them directly to T.

sample_count_from_dims

Computes width * height * depth using checked arithmetic.

sample_index

Computes the pixel-interleaved sample index pixel * depth + dim.

words_from_padded

Converts a byte slice to zero-padded little-endian words.

Type Aliases

Result

Result type used by all LERC crates.