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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