viva-genapi

GenApi node map evaluation engine with typed feature access backed by register I/O.

Turns a parsed XmlModel into a live NodeMap that can read and write camera features through any transport implementing the RegisterIo trait.

Disclaimer -- Independent open-source Rust implementation of GenICam-related standards. Not affiliated with, endorsed by, or the reference implementation of EMVA GenICam. GenICam is a trademark of EMVA.

Features

• NodeMap -- in-memory node store built from XmlModel, with dependency tracking and cache invalidation
• Typed accessors -- get_integer(), get_float(), get_enum(), get_bool(), exec_command(), etc.
• SwissKnife -- full expression evaluator (arithmetic, comparisons, ternary, logical, bitwise, math functions)
• pValue delegation -- Integer, Float, Enum, Boolean, and Command nodes delegate to backing registers
• Converter / IntConverter -- linear and polynomial value conversions
• Selector support -- address switching for features like GainSelector
• NullIo -- offline XML browsing without a camera
• WASM compatible -- compiles for wasm32-unknown-unknown

Usage

[dependencies]
viva-genapi = "0.1"

use viva_genapi::{NodeMap, RegisterIo, NullIo};
use viva_genapi_xml::parse;

let xml = std::fs::read_to_string("device.xml")?;
let model = parse(&xml)?;
let nodemap = NodeMap::from(model);

// Browse features offline
let io = NullIo;
for name in nodemap.node_names() {
    println!("{name}");
}

Documentation

API reference (docs.rs)

Part of the genicam-rs workspace.