Decoder for crunch-compressed texture data

This crate provides a Rust wrapper around the Unity fork of the crunch decompressor.

Example

use decrunch::*;
use std::fs::File;
use std::io::Read;

let mut compressed_file = File::open("testdata/copyright_2048_compressed.dat")?;
let mut compressed_data = Vec::new();

compressed_file.read_to_end(&mut compressed_data)?;

let c_data = CrunchedData::new(&compressed_data);
let decompressed_data = match c_data.decode_level(0) {
    None => {
        panic!("Failed to decompress texture data");
    }
    Some(res) => res,
};

assert!(decompressed_data.len() > 0);