Module exr::image::read::specific_channels

How to read arbitrary but specific selection of arbitrary channels. This is not a zero-cost abstraction.

Structs

• CollectPixels
  Specifies how to collect all the specified channels into a number of individual pixels.
• OptionalSampleReader
  Reader for a single channel. Generic over the concrete sample type (f16, f32, u32). Can also skip reading a channel if it could not be found in the image.
• ReadOptionalChannel
  Used to read another specific channel from an image. Contains the previous ReadChannels objects.
• ReadRequiredChannel
  Used to read another specific channel from an image. Contains the previous ReadChannels objects.
• SampleReader
  Reader for a single channel. Generic over the concrete sample type (f16, f32, u32).
• SpecificChannelsReader
  The reader that holds the temporary data that is required to read some specified channels.

Traits

• ReadSpecificChannel
  Can be attached one more channel reader. Call required or optional on this object to declare another channel to be read from the file. Call collect_pixels at last to define how the previously declared pixels should be stored.
• RecursivePixelReader
  A reader containing sub-readers for reading the pixel content of an image.

Functions

• read_and_convert_all_samples_batched 🔒
  Does the same as convert_batch(in_bytes.chunks().map(From::from_bytes)), but vectorized. Reads the samples for one line, using the sample type specified in the file, and then converts those to the desired sample types. Uses batches to allow vectorization, converting multiple values with one instruction.

Type Aliases

• ReadZeroChannels
  Read zero channels from an image. Call with_named_channel on this object to read as many channels as desired.