Interface AudioProcessor

public interface AudioProcessor

Custom DSP in Java, the Codename One counterpart of the Web Audio AudioWorkletProcessor. An AudioProcessorNode calls process(float[][][], float[][][], float[][]) once per render quantum of 128 frames, on the render thread.

The arrays follow the worklet's layout: inputs[input][channel][frame], outputs[output][channel][frame] and parameters[param][frame]. An input with nothing connected has one silent channel. A parameter whose value is constant for the quantum is an array of length 1; otherwise it has 128 values. Outputs arrive zeroed.

The method runs on the audio thread: it must not block, wait on the EDT or allocate in steady state, or the output glitches. Keep the arrays only for the duration of the call; they are reused.

Method Summary

Modifier and Type	Method	Description
boolean	process(float[][][] inputs, float[][][] outputs, float[][] parameters)	Renders one quantum.

Method Details

process

boolean process(float[][][] inputs,
 float[][][] outputs,
 float[][] parameters)

Renders one quantum.

Parameters

• inputs: the mixed input of each input, per channel

• outputs: the output to fill, per output and channel

• parameters: the value of each declared parameter, in declaration order

Returns

true to keep processing; false to have the node output silence from now on, as a worklet does once its processor stops answering true