Module utils

PNG decode/encode and load functions, console log macros, argument parsing from javascript input to inner-crate rust types and other utility functions.

Structs

NodeFs

Functions

build_algorithm

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

build_params

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

encode_file

Receives png buffer data and encodes it as a File with specified CompressionType and FilterType.

encode_image_data

Receives png buffer data and encodes it as an ImageData object with specified CompressionType and FilterType.

get_compression_type

Retrieves the image::codecs::png::CompressionType value from the HashMap<String, JSONValue> map if it exists. Otherwise it returns the default value: CompressionType::Fast.

get_filter_type

Retrieves the image::codecs::png::FilterType value from the HashMap<String, JSONValue> map if it exists. Otherwise it returns the default value: FilterType::NoFilter.

load_png

Receives a File and returns the decoded PNG byte buffer.

log

log_benchmark

Logs one line (algorithm, compression, filter, blend time, read time, write time) of the benchmarks table to the browser console (with console.log).

log_benchmark_header

Logs the header/column names of the benchmarks table to the browser console (with console.log).

node_read_file_async

Rust Future from nodejs fs.readFile Promise (awaitable in node).

node_read_file_sync

Wrapper function for nodejs fs.readFileSync.

node_require

node_write_file_sync

Wrapper function for nodejs fs.writeFileSync.