ooz-wasm

ooz-wasm

WASM bindings for ooz: Open source Kraken, Mermaid, Selkie, Leviathan, LZNA, Bitknit decompressor.

Notes

• .wasm file is base64 embedded using -s SINGLE_FILE=1.
• WebAssembly Module is compiled when the ESM module is imported using a top-level await.

Requires browser WebAssembly SIMD support.

• Can be enabled in Chromium-based browsers on about://flags/#enable-webassembly-simd
• Can be enabled in Firefox on about:config javascript.options.wasm_simd

Usage

// Decompress data
// NOTE: returned TypedArray lives in WASM memory, you can safely use it until the next call to decompressUnsafe/decompress.
function decompressUnsafe(data: Uint8Array, rawSize: number): Uint8Array;

// Decompress data
function decompress(data: Uint8Array, rawSize: number): Uint8Array;

Build

1. Install Emscripten SDK
2. emcmake cmake -B build [-G "..."]
3. Build

   # Ninja (-G "Ninja")
   cmake --build build
   # or Makefiles (-G "Unix Makefiles")
   emmake make -C build