light9 Files · attic/Op.py

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Drew Perttula

leave in a comment about how to offset the audio time in case your sound card is lying
we didn't eventually need this because we found a good-sounding card
that could report offset correctly. But if you're stuck with a card
that reports offset incorrectly, you can play with this offset for
a partial workaround. note that song intros will probably still be
corrupted (but you could workaround that by prepending some silence)

"""each node type has an Op within it"""

class Op:
    """nodes can have several versions of their operation function.

    ops don't return anything! 
    """
    def __init__(self):
        """This should not be overridden without being called."""
        pass

    def inputschanged(self, input, output, stateaccess):
        """If you only define one op function body, make it this one. """
        pass
    
    def created(self, input, output, stateaccess):
        """This is called one time when the node is newly created. It's
        not called when the node instance is pickled/unpickled. Use this
        version to initialize state."""
        # an extra call to changed() should help the outputs get set
        # correctly before any real inputs-changed events come around
        # (assuming this method doesn't get overridden with a
        # specialized version)
        self.inputschanged(input, output, stateaccess)        

    def statechanged(self, input, output, stateaccess):
        '''State might have been changed by a user dragging a parameter or by
        a state being hcanged otherwise.'''
        self.inputschanged(input, output, stateaccess)        

    def clocked(self, input, output, stateaccess):
        self.inputschanged(input, output, stateaccess)