Crate hid_decode 

HID report descriptor decoding utilities

This library can perform text decoding of USB HID report descriptors.

It does not perform stateful functional decoding, so it can’t (yet) determine the size and layout of HID reports.

See Device Class Definition for Human Interface Devices for a detailed description of HID report descriptors.

Example

let mut output = Vec::new();
hid_decode::decode(&mut output, GAMEPAD_DESCRIPTOR.iter().copied()).expect("write error");
let output = String::try_from(output).expect("non-UTF8 output");
assert_eq!(
    output.lines().collect::<Vec<_>>(),
    [
        "Usage Page: GenericDesktop",
        "Usage: Gamepad",
        "Collection: Application",
        "Usage Page: Button",
        "Usage Minimum: 1",
        "Usage Maximum: 8",
        "Logical Minimum: 0",
        "Logical Maximum: 1",
        "Report Size: 1",
        "Report Count: 8",
        "Input: Data Variable Absolute No-Wrap Linear Preferred-State No-Null-Position Bit-Field",
        "EndCollection",
    ]
);

Structs

DecoderContext

HID Decoder state.

Verbosity

Configuration for decoding descriptors to text.

Enums

LengthError

An error that resulted from improper item encoding.

Functions

decode

Decode HID descriptor bytes as text.

decode_with_options

Decode HID descriptor bytes as text.