from PySide6.QtCore import QObject, Signal
from PySide6.QtGui import QPixmap


class BaseImageSource(QObject):
    new_frame = Signal(QPixmap)
    errorOccurred = Signal(str)

    def start(self):
        raise NotImplementedError
    
    def stop(self):
        raise NotImplementedError

class BaseControlSource(QObject):
    errorOccurred = Signal(str)
    parameterChanged = Signal(str, object)

    def set_parameter(self, name: str, value):
        raise NotImplementedError
    
    def get_parameter(self, name: str):
        raise NotImplementedError
    
    def list_parameters(self) -> dict:
        raise NotImplementedError