TODO: this.

Add a signal to the buffer.

Apply the pedal to each of the frames and add an offset to split up the graph.

Start the UI process and block the current thread until the window is closed.

Consume the contents of the buffer into the destination. After this, the buffer will be empty.

Returns the factory associated with the provided pedal or null if it doesn't exist.

Open an audio stream that reads signal from `input_device_index`, transforms it using `transform_fn` and writes the result to `output_device_index`.

Once the buffer exceeds the max size, new samples will be rejected. This is to limit the buffers memory usage in the event that the consumer lags.

TODO: Is there a more graceful way to handle failures than just asserting here?

Advance through the LFO curve and return the Y value.

Map the phase to the amount of delay offset in seconds.

Override the button press impact on the looper pedal to shift states instead of disabling.