Module utils

Utility functions for argument parsing from python input to inner-crate rust types.

Functions

build_algorithm

Attempts to parse a &String to a BlendAlgorithm. Returns the enum variant if it succeeds. Otherwise it returns a PyErr.

build_params

Attempts to build a vector of blending operations and extra parameters. One pair per blending operation. Returns a PyErr if it fails parsing.

get_compression_type

Retrieves the image::codecs::png::CompressionType value from the Options map if it exists. Otherwise it returns the default value: CompressionType::Fast.

get_filter_type

Retrieves the image::codecs::png::FilterType value from the Options map if it exists. Otherwise it returns the default value: FilterType::NoFilter.

get_num_threads

Retrieves the number of threads value from the Options map if it exists. Otherwise it returns the default value: 0.