@csound/browser/src/dlinit.js

[](https://www.npmjs.com/package/@csound/browser) [](h

export const dlinit = (hostInstance, pluginInstance, table, csoundInstance) => {
  if (pluginInstance.exports["csoundModuleInit"]) {
    const csoundModuleCreate = new WebAssembly.Global({ value: "i32", mutable: true }, 0);
    const csoundModuleInit = new WebAssembly.Global({ value: "i32", mutable: true }, 0);
    const csoundModuleDestroy = new WebAssembly.Global({ value: "i32", mutable: true }, 0);
    const csoundModuleErrorCodeToString = new WebAssembly.Global(
      { value: "i32", mutable: true },
      0,
    );

    let tableEnd = table.length;

    if (typeof pluginInstance.exports["csoundModuleCreate"] === "function") {
      table.grow(1);
      csoundModuleCreate.value = tableEnd;
      table.set(tableEnd, pluginInstance.exports["csoundModuleCreate"]);
      tableEnd += 1;
    }

    if (typeof pluginInstance.exports["csoundModuleInit"] === "function") {
      table.grow(1);
      csoundModuleInit.value = tableEnd;
      table.set(tableEnd, pluginInstance.exports["csoundModuleInit"]);
      tableEnd += 1;
    }

    if (typeof pluginInstance.exports["csoundModuleDestroy"] === "function") {
      table.grow(1);
      csoundModuleDestroy.value = tableEnd;
      table.set(tableEnd, pluginInstance.exports["csoundModuleDestroy"]);
      tableEnd += 1;
    }

    if (typeof pluginInstance.exports["csoundModuleErrorCodeToString"] === "function") {
      table.grow(1);
      csoundModuleErrorCodeToString.value = tableEnd;
      table.set(tableEnd, pluginInstance.exports["csoundModuleErrorCodeToString"]);
      tableEnd += 1;
    }

    hostInstance.exports["csoundWasiLoadPlugin"](
      csoundInstance,
      csoundModuleCreate,
      csoundModuleInit,
      csoundModuleDestroy,
      csoundModuleErrorCodeToString,
    );
  } else if (
    pluginInstance.exports["csound_opcode_init"] ||
    pluginInstance.exports["csound_fgen_init"]
  ) {
    const csoundOpcodeInit = new WebAssembly.Global({ value: "i32", mutable: true }, 0);
    const csoundFgenInit = new WebAssembly.Global({ value: "i32", mutable: true }, 0);

    let tableEnd = table.length;

    if (typeof pluginInstance.exports["csound_opcode_init"] === "function") {
      csoundOpcodeInit.value = tableEnd;
      table.grow(1);
      table.set(tableEnd, pluginInstance.exports["csound_opcode_init"]);
      tableEnd += 1;
    }

    if (typeof pluginInstance.exports["csound_fgen_init"] === "function") {
      csoundFgenInit.value = tableEnd;
      table.grow(1);
      table.set(tableEnd, pluginInstance.exports["csound_fgen_init"]);
      tableEnd += 1;
    }

    hostInstance.exports["csoundWasiLoadOpcodeLibrary"](
      csoundInstance,
      csoundFgenInit,
      csoundOpcodeInit,
    );
  } else {
    console.error("Plugin doesn't export nececcary functions to quality as csound plugin.");
  }
};