Module `meta`

Describes all meta data possible in an exr file. Contains functionality to read and write meta data from bytes. Browse the exr::image module to get started with the high-level interface.

Modules

attribute Contains all meta data attributes. Each layer can have any number of Attributes, including custom attributes.
header Contains collections of common attributes. Defines some data types that list all standard attributes.
magic_number The first four bytes of each exr file. Used to abort reading non-exr files.
sequence_end A 0_u8 at the end of a sequence.

Structs

MetaData Contains the complete meta data of an exr image.
Requirements A summary of requirements that must be met to read this exr file.
TileIndices Locates a rectangular section of pixels in an image.

Enums

BlockDescription How the image pixels are split up into separate blocks.

Functions

calculate_block_position_and_size Compute the start position and size of a block inside a dimension.
calculate_block_size Calculate the size of a single block. If this is the last block, this only returns the required size, which is always smaller than the default block size.
compute_block_count Compute the number of tiles required to contain all values.
compute_chunk_count Compute the number of chunks that an image is divided into. May be an expensive operation.
compute_level_count Calculate number of mip levels in a given resolution.
compute_level_size Calculate the size of a single mip level by index.
mip_map_indices Iterates over all mip map level indices of a given size. The order of iteration conforms to LineOrder::Increasing.
mip_map_levels Iterates over all mip map level resolutions of a given size, including the indices of each level. The order of iteration conforms to LineOrder::Increasing.
rip_map_indices Iterates over all rip map level indices of a given size. The order of iteration conforms to LineOrder::Increasing.
rip_map_levels Iterates over all rip map level resolutions of a given size, including the indices of each level. The order of iteration conforms to LineOrder::Increasing.

Type Aliases

Headers List of Headers.
OffsetTable The offset table is an ordered list of indices referencing pixel data in the exr file.
OffsetTables List of OffsetTables.