WebAssembly Instantiation Error

[ikigai-kevin-k]

Dear Author,

This error occurs:
When implementing seamless transitions between different quality sources,
I initialize a new AVPlayer, and only destroy the old AVPlayer instance after the new one has completely loaded.
I'm not sure if my current solution of initializing a new WebAssemblyRunner when switching streams is a good approach.

The error in dev tool:

Uncaught (in promise) LinkError: WebAssembly.instantiate(): Import #26 "env" "__memory_base": global import must be a number, valid Wasm reference, or WebAssembly.Global object
    at E.run (cd15baa0-95f4-485e-9…059618ae:188:179170)
    at g.open (cd15baa0-95f4-485e-9…059618ae:188:236173)
    at cd15baa0-95f4-485e-9…059618ae:188:218190
    at new Promise (<anonymous>)
    at new e (cd15baa0-95f4-485e-9…f2059618ae:188:2042)
    at _.open (cd15baa0-95f4-485e-9…059618ae:188:218143)
    at w.invoke (cd15baa0-95f4-485e-9…f2059618ae:171:2461)
    at cd15baa0-95f4-485e-9…0f2059618ae:357:585
    at a (cd15baa0-95f4-485e-9…2059618ae:357:10594)
    at cd15baa0-95f4-485e-9…f2059618ae:357:9199
run	@	cd15baa0-95f4-485e-930e-50f2059618ae:188
open	@	cd15baa0-95f4-485e-930e-50f2059618ae:188
(anonymous)	@	cd15baa0-95f4-485e-930e-50f2059618ae:188
e	@	cd15baa0-95f4-485e-930e-50f2059618ae:188
open	@	cd15baa0-95f4-485e-930e-50f2059618ae:188
invoke	@	cd15baa0-95f4-485e-930e-50f2059618ae:171
(anonymous)	@	cd15baa0-95f4-485e-930e-50f2059618ae:357
a	@	cd15baa0-95f4-485e-930e-50f2059618ae:357
(anonymous)	@	cd15baa0-95f4-485e-930e-50f2059618ae:357
n	@	cd15baa0-95f4-485e-930e-50f2059618ae:357
fire	@	cd15baa0-95f4-485e-930e-50f2059618ae:357
handle	@	cd15baa0-95f4-485e-930e-50f2059618ae:357

Error-related code snippet:

// WebAssemblyRunner.ts

            async run(t, e) {
                if (p.Ik(t) && l.X$(this.options.imports, t),
                T.Ko() && this.resource.threadModule && (T.LK || T.Ts(c.ce, b.HEAP_INITIAL, b.HEAP_MAXIMUM, A.override),
                l.X$(this.imports.env, A)),
                !k.LK && k.Ko() && k.Ts(c.ce, b.HEAP_INITIAL, b.HEAP_MAXIMUM),
                !U && x.Ko() && (U = !0,
                this.overrideAtomic()),
                this.instance = await WebAssembly.instantiate(this.resource.module, this.imports), // <----------- This line
                this.initRunTime(),
                this.resource.threadModule && this.resource.enableThreadPool && e > 0 && !S.A.jspi) {
                    this.childUrl || this.createChildUrl();
                    let t = e;
                    this.resource.enableThreadCountRate && (t *= this.resource.enableThreadCountRate),
                    this.threadPool = new I.A(t,this.childUrl),
                    await this.threadPool.ready({
                        tableSize: this.resource.tableSize,
                        module: this.resource.threadModule.module,
                        initFuncs: this.resource.threadModule.initFuncs,
                        memoryBase: this.options.memoryBase || this.memoryBase,
                        tableBase: this.tableBase,
                        childImports: this.childImports
                    })
                }
            }

Solution: init a new WebAssemblyRunner

// AudioDecoder.ts (caller)
export default class WasmAudioDecoder {
  ...
  
  public async open(parameters: pointer<AVCodecParameters>, opts: Data = {}): Promise<int32> {
    // Preventing error when switching source, create new runner every time
    this.decoder = new WebAssemblyRunner(this.options.resource) // <--------------- Add this line

    await this.decoder.run()
    ...
  }

  ...
}

[zhaohappy]

为什么要加重新 new WebAssemblyRunner 的代码；每一个 AVPlayer 实例都是互不影响的，你可以决定何时创建何时销毁。