57 lines
1.8 KiB
Python
57 lines
1.8 KiB
Python
class ZoomAPIMixin:
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"""
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API for zooming and changing focus.
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Note that the API does not allow zooming/focusing by absolute
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values rather that changing focus/zoom for a given time.
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"""
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def _start_operation(self, operation, speed):
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data = [{"cmd": "PtzCtrl", "action": 0, "param": {"channel": 0, "op": operation, "speed": speed}}]
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return self._execute_command('PtzCtrl', data)
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def _stop_zooming_or_focusing(self):
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"""This command stops any ongoing zooming or focusing actions."""
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data = [{"cmd": "PtzCtrl", "action": 0, "param": {"channel": 0, "op": "Stop"}}]
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return self._execute_command('PtzCtrl', data)
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def start_zooming_in(self, speed=60):
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"""
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The camera zooms in until self.stop_zooming() is called.
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:return: response json
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"""
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return self._start_operation('ZoomInc', speed=speed)
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def start_zooming_out(self, speed=60):
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"""
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The camera zooms out until self.stop_zooming() is called.
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:return: response json
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"""
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return self._start_operation('ZoomDec', speed=speed)
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def stop_zooming(self):
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"""
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Stop zooming.
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:return: response json
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"""
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return self._stop_zooming_or_focusing()
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def start_focusing_in(self, speed=32):
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"""
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The camera focuses in until self.stop_focusing() is called.
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:return: response json
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"""
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return self._start_operation('FocusInc', speed=speed)
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def start_focusing_out(self, speed=32):
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"""
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The camera focuses out until self.stop_focusing() is called.
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:return: response json
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"""
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return self._start_operation('FocusDec', speed=speed)
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def stop_focusing(self):
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"""
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Stop focusing.
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:return: response json
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"""
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return self._stop_zooming_or_focusing()
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