FFT2LogicImpl

The default implementation clears from readOff to the end of the window buffer. This method is not called if fullLastWindow returns false!

Invoked by Akka after processing of external events stopped because the operator is about to stop or fail. Calls stopped and then removes the node from the control.

Final so we don't accidentally place code here. In order to initialize state, use NodeHasInitImpl and implement init.

Reads in a number of frames. The default implementation copies to the window buffer.

The default number of frames to read in per window equals the window buffer size

Tries to prepare the parameters for the next window. If successful, returns true otherwise false. If successful, it must be possible to successively call winBufSize.

The size for the window buffer, or zero if this buffer should no be used. This can be polled multiple times per window, the element might thus need to be saved (in tryObtainWinParams()). In most cases, it will be sufficient to poll the value in tryObtainWinParams and implement winBufSize by calling the value method of the corresponding input handler.

Writes out a number of frames. The default implementation copies from the window buffer.

The number of frames to write out per window. This is polled once after processWindow. The default equals the window buffer size (winBufSize). If an implementation wants to truncate the last window when the input terminates, it should override fullLastWindow to return false, in which case the default implementation of writeWinSize will return ``