Create test.py

1 files changed, 124 insertions, 0 deletions

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+# -*- coding: utf-8 -*-
+import vimbastructure as structs
+from vimbaobject import VimbaObject
+from vimbaexception import VimbaException
+from vimbaframe import VimbaFrame
+from vimbadll import VimbaDLL
+from ctypes import *
+
+# camera features are automatically set as attributes of camera.
+class VimbaCamera(VimbaObject):
+	"""
+	A Vimba camera object. This class provides the minimal access
+	to Vimba functions required to control the camera.
+	"""
+	
+	@property
+	def cameraIdString(self):
+		return self._cameraIdString
+	
+	# own handle is inherited as self._handle
+	def __init__(self, cameraIdString):
+		
+		# call super constructor
+		super(VimbaCamera, self).__init__()
+		
+		# set ID
+		self._cameraIdString = cameraIdString
+
+		# set own info
+		self._info = self._getInfo()
+		
+	def getInfo(self):
+		"""
+		Get info of the camera. Does not require
+		the camera to be opened.
+		
+		:returns: VimbaCameraInfo object -- camera information.
+		"""
+		return self._info
+	
+	def _getInfo(self):
+		"""
+		Get info of the camera. Does not require
+		the camera to be opened.
+		
+		:returns: VimbaCameraInfo object -- camera information.
+		"""
+		# args for Vimba call
+		cameraInfo = structs.VimbaCameraInfo()
+		
+		# Vimba DLL will return an error code
+		errorCode = VimbaDLL.cameraInfoQuery(self._cameraIdString,
+											 byref(cameraInfo),
+											 sizeof(cameraInfo))
+		if errorCode != 0:
+			raise VimbaException(errorCode)
+		
+		return cameraInfo
+	
+	def openCamera(self):
+		"""
+		Open the camera.
+		"""
+		# args for Vimba call
+		cameraAccessMode = 1	# full access (see VmbAccessModeType)
+
+		errorCode = VimbaDLL.cameraOpen(self._cameraIdString,
+										cameraAccessMode,
+										byref(self._handle))
+		if errorCode != 0:
+			raise VimbaException(errorCode)
+		
+	def closeCamera(self):
+		"""
+		Close the camera.
+		"""
+		errorCode = VimbaDLL.cameraClose(self._handle)
+		if errorCode != 0:
+			raise VimbaException(errorCode)
+		
+	def revokeAllFrames(self):
+		"""
+		Revoke all frames assigned to the camera.
+		"""
+		errorCode = VimbaDLL.frameRevokeAll(self._handle)
+		if errorCode != 0:
+			raise VimbaException(errorCode)
+
+	def startCapture(self):
+		"""
+		Prepare the API for incoming frames.
+		"""
+		errorCode = VimbaDLL.captureStart(self._handle)
+		if errorCode != 0:
+			raise VimbaException(errorCode)
+	
+	def endCapture(self):
+		"""
+		Stop the API from being able to receive frames.
+		"""
+		errorCode = VimbaDLL.captureEnd(self._handle)
+		if errorCode != 0:
+			raise VimbaException(errorCode)
+
+	def flushCaptureQueue(self):
+		"""
+		Flush the capture queue.
+		"""
+		errorCode = VimbaDLL.captureQueueFlush(self._handle)
+		if errorCode != 0:
+			raise VimbaException(errorCode)
+		
+	# method for easy frame creation
+	def getFrame(self):
+		"""
+		Creates and returns a new frame object. Multiple frames
+		per camera can therefore be returned.
+		
+		:returns: VimbaFrame object -- the new frame.
+		"""
+		return VimbaFrame(self)
+
+
+