tone/build/esm/core/worklet/SingleIOProcessor.worklet.d.ts

A Web Audio framework for making interactive music in the browser.

import "./ToneAudioWorkletProcessor.worklet.js";
export declare const singleIOProcess = "\n\t/**\n\t * Abstract class for a single input/output processor. \n\t * has a 'generate' function which processes one sample at a time\n\t */\n\tclass SingleIOProcessor extends ToneAudioWorkletProcessor {\n\n\t\tconstructor(options) {\n\t\t\tsuper(Object.assign(options, {\n\t\t\t\tnumberOfInputs: 1,\n\t\t\t\tnumberOfOutputs: 1\n\t\t\t}));\n\t\t\t/**\n\t\t\t * Holds the name of the parameter and a single value of that\n\t\t\t * parameter at the current sample\n\t\t\t * @type { [name: string]: number }\n\t\t\t */\n\t\t\tthis.params = {}\n\t\t}\n\n\t\t/**\n\t\t * Generate an output sample from the input sample and parameters\n\t\t * @abstract\n\t\t * @param input number\n\t\t * @param channel number\n\t\t * @param parameters { [name: string]: number }\n\t\t * @returns number\n\t\t */\n\t\tgenerate(){}\n\n\t\t/**\n\t\t * Update the private params object with the \n\t\t * values of the parameters at the given index\n\t\t * @param parameters { [name: string]: Float32Array },\n\t\t * @param index number\n\t\t */\n\t\tupdateParams(parameters, index) {\n\t\t\tfor (const paramName in parameters) {\n\t\t\t\tconst param = parameters[paramName];\n\t\t\t\tif (param.length > 1) {\n\t\t\t\t\tthis.params[paramName] = parameters[paramName][index];\n\t\t\t\t} else {\n\t\t\t\t\tthis.params[paramName] = parameters[paramName][0];\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t/**\n\t\t * Process a single frame of the audio\n\t\t * @param inputs Float32Array[][]\n\t\t * @param outputs Float32Array[][]\n\t\t */\n\t\tprocess(inputs, outputs, parameters) {\n\t\t\tconst input = inputs[0];\n\t\t\tconst output = outputs[0];\n\t\t\t// get the parameter values\n\t\t\tconst channelCount = Math.max(input && input.length || 0, output.length);\n\t\t\tfor (let sample = 0; sample < this.blockSize; sample++) {\n\t\t\t\tthis.updateParams(parameters, sample);\n\t\t\t\tfor (let channel = 0; channel < channelCount; channel++) {\n\t\t\t\t\tconst inputSample = input && input.length ? input[channel][sample] : 0;\n\t\t\t\t\toutput[channel][sample] = this.generate(inputSample, channel, this.params);\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn !this.disposed;\n\t\t}\n\t};\n";