This repo provides an example browser host for CLAP plugins compiled to WASM. Any plugin which can be fetched with CORS can be specified with ?module=<...> in the URL.
By default it loads WASM builds of Signalsmith Basics. The repo also includes my more minimal CLAP examples (including webview UIs with the webview CLAP draft extension) which can be seen running here.
The host is built on top of a wrapper (in clap-audionode/] which load a single WCLAP as an AudioNode (backed by an AudioWorkletProcessor).
This is implemented by writing a C++ WCLAP host (see clap-audionode/host-dev/host.cpp) which provides a simpler API to the JS nodes.
The cleanest way to interact with WCLAPs in the browser is to write a C++ WASM host, which then exposes a simpler API to your custom JS. This keeps all the CLAP-specific structures in the "native" world.
This repo provides wclap-js-instance, a C++ library (.h/.cpp pair) which for building your WCLAP host. This is built on top of wclap-cpp, and provides an Instance implementation which abstracts all the WCLAP interactions (e.g. calling WCLAP functions, reading/writing structures in its memory).
It also provides a JavaScript library (ES6 module: wclap-js/wclap.mjs) which can load hosts written using the above wclap-js-instance library, and manages the corresponding WebAssembly
It also provides a WASI helper (written in C++, with JS to load it). Currently this only implements the very basics (logging and random numbers), but it defines all the functions for wasi_snapshot_preview1 (32-bit only).