FlyCapture2_Camera-bugfixes: Fix that ensures camera is set to use Format7, Mode0.

In so doing, it now defaults the 'ImageMode' settings to be the full sensor
with 'MONO8' pixel format on initialization of the device. User specified
'ImageMode' parameters override these defaults.

Author: dihm

FlyCapture2Camera/blacs_workers.py

@@ -44,10 +44,6 @@ def __init__(self, serial_number):
         self.camera = PyCapture2.Camera()
         self.camera.connect(bus.getCameraFromSerialNumber(serial_number))
 
-        config = self.camera.getConfiguration()
-        config.grabTimeout = 1000 # in ms
-        config.highPerformanceRetrieveBuffer = True
-        self.camera.setConfiguration(config)
         # set which values of properties to return
         self.get_props = ['present','absControl','absValue',
                           'onOff','autoManualMode',
@@ -60,6 +56,12 @@ def __init__(self, serial_number):
         self.pixel_formats = IntEnum('pixel_formats',fmts)
 
         self._abort_acquisition = False
+
+        # set standard device configuration
+        config = self.camera.getConfiguration()
+        config.grabTimeout = 1000 # in ms
+        config.highPerformanceRetrieveBuffer = True
+        self.camera.setConfiguration(config)
 
         # check if GigE camera. If so, ensure max packet size is used
         cam_info = self.camera.getCameraInfo()
@@ -84,6 +86,19 @@ def __init__(self, serial_number):
             # close second handle to camera
             gige_camera.disconnect()
 
+        # ensure camera is in Format7,Mode 0 custom image mode
+        fmt7_info, supported = self.camera.getFormat7Info(0)
+        if supported:
+            # to ensure Format7, must set custom image settings
+            # defaults to full sensor size and 'MONO8' pixel format
+            fmt7_default = PyCapture2.Format7ImageSettings(0,0,0,fmt7_info.maxWidth,fmt7_info.maxHeight,self.pixel_formats['MONO8'])
+            self._send_format7_config(fmt7_default)
+            
+        else:
+            msg = """Camera does not support Format7, Mode 0 custom image
+            configuration. This driver is therefore not compatible, as written."""
+            raise RuntimeError(dedent(msg))
+
     def set_attributes(self, attr_dict):
         """Sets all attribues in attr_dict.
         FlyCapture does not control all settings through same interface,
@@ -145,12 +160,8 @@ def set_image_mode(self,image_settings):
             for k,v in image_dict.items():
                 setattr(image_mode,k,v)
 
-            try:            
-                fmt7PktInfo, valid = self.camera.validateFormat7Settings(image_mode)
-                if valid:
-                    self.camera.setFormat7ConfigurationPacket(fmt7PktInfo.recommendedBytesPerPacket, image_mode)
-            except PyCapture2.Fc2error as e:
-                raise RuntimeError('Error configuring image settings') from e
+            self._send_format7_config(image_mode)
+            
         else:
             msg = """Camera does not support Format7, Mode 0 custom image
             configuration. This driver is therefore not compatible, as written."""
@@ -301,6 +312,15 @@ def _decode_image_data(self,img):
             uint8 data to desired format in _decode_image_data() method."""
             raise ValueError(dedent(msg))
         return image.copy()
+        
+    def _send_format7_config(self,image_config):
+        """Validates and sends the Format7 configuration packet."""
+        try:            
+            fmt7PktInfo, valid = self.camera.validateFormat7Settings(image_config)
+            if valid:
+                self.camera.setFormat7ConfigurationPacket(fmt7PktInfo.recommendedBytesPerPacket, image_config)
+        except PyCapture2.Fc2error as e:
+            raise RuntimeError('Error configuring image settings') from e
 
     def stop_acquisition(self):
         self.camera.stopCapture()