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-rw-r--r--tango/README.md31
-rwxr-xr-xtango/Uca121
-rw-r--r--tango/setup.py14
3 files changed, 166 insertions, 0 deletions
diff --git a/tango/README.md b/tango/README.md
new file mode 100644
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+++ b/tango/README.md
@@ -0,0 +1,31 @@
+## Installation
+
+Install the server script with
+
+ $ python setup.py install
+
+and create a new TANGO server `Uca/xyz` with a class named `Camera`.
+
+
+## Usage
+
+Before starting the server, you have to create a new device property `camera`
+which specifies which camera to use. If not set, the `mock` camera will be used
+by default.
+
+Start the device server with
+
+ $ Uca foo
+
+You should be able to manipulate camera attributes like `exposure_time` and the
+like and store frames using a `Start`, `Store`, `Stop` cycle.
+
+```python
+import PyTango
+
+camera = PyTango.DeviceProxy("foo/Camera/mock")
+camera.exposure_time = 0.1
+camera.Start()
+camera.Store('foo.tif')
+camera.Stop()
+```
diff --git a/tango/Uca b/tango/Uca
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+++ b/tango/Uca
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+#!/usr/bin/env python
+
+import sys
+import time
+import numpy as np
+import PyTango
+from gi.repository import Uca, GObject
+from PyTango import Attr, AttrWriteType, DevState
+from PyTango.server import Device, DeviceMeta, device_property, command, server_run
+
+try:
+ import tifffile
+ HAVE_TIFFFILE = True
+except ImportError:
+ print("Could not import tifffile, consider to install it")
+ HAVE_TIFFFILE = False
+
+
+def get_tango_type(prop):
+ mapping = {
+ GObject.TYPE_BOOLEAN: PyTango.CmdArgType.DevBoolean,
+ GObject.TYPE_CHAR: PyTango.CmdArgType.DevUChar,
+ GObject.TYPE_UCHAR: PyTango.CmdArgType.DevUChar,
+ GObject.TYPE_FLOAT: PyTango.CmdArgType.DevFloat,
+ GObject.TYPE_INT: PyTango.CmdArgType.DevShort, # DevInt is invalid?
+ GObject.TYPE_UINT: PyTango.CmdArgType.DevUShort, # check
+ GObject.TYPE_LONG: PyTango.CmdArgType.DevLong,
+ GObject.TYPE_DOUBLE: PyTango.CmdArgType.DevDouble,
+ GObject.TYPE_STRING: PyTango.CmdArgType.DevString,
+ }
+
+ return mapping.get(prop, None)
+
+
+def get_tango_write_type(prop):
+ if prop.flags & GObject.ParamFlags.WRITABLE:
+ if prop.flags & GObject.ParamFlags.READABLE:
+ return AttrWriteType.READ_WRITE
+
+ return AttrWriteType.WRITE
+
+ if prop.flags & GObject.ParamFlags.READABLE:
+ return AttrWriteType.READ
+
+ raise RuntimeError("{} has no valid param flag".format(prop.name))
+
+
+def prop_to_attr_name(name):
+ return name.replace('-', '_')
+
+
+def attr_to_prop_name(name):
+ return name.replace('_', '-')
+
+
+class Camera(Device):
+ __metaclass__ = DeviceMeta
+
+ camera = device_property(dtype=str, default_value='mock')
+
+ def init_device(self):
+ Device.init_device(self)
+ self.set_state(DevState.ON)
+ self.pm = Uca.PluginManager()
+ self.device = self.pm.get_camerah(self.camera, None)
+ self.attrs = {}
+
+ for prop in self.device.props:
+ tango_type = get_tango_type(prop.value_type)
+ write_type = get_tango_write_type(prop)
+
+ if tango_type:
+ name = prop_to_attr_name(prop.name)
+ attr = Attr(name, tango_type, write_type)
+ attr_props = PyTango.UserDefaultAttrProp()
+ attr_props.set_description(prop.blurb)
+ attr.set_default_properties(attr_props)
+
+ write_func = None
+
+ if write_type in (AttrWriteType.WRITE, AttrWriteType.READ_WRITE):
+ write_func = self.do_write
+
+ self.attrs[prop.name] = self.add_attribute(attr, self.do_read, write_func)
+
+ def grab(self):
+ array = np.empty(self.shape, dtype=self.dtype)
+ data = array.__array_interface__['data'][0]
+ self.device.grab(data)
+ return array
+
+ def do_read(self, attr):
+ name = attr_to_prop_name(attr.get_name())
+ attr.set_value(self.device.get_property(name))
+
+ def do_write(self, attr):
+ name = attr_to_prop_name(attr.get_name())
+ self.device.set_property(name, attr.get_write_value())
+
+ @command
+ def Start(self):
+ self.shape = (self.device.props.roi_height, self.device.props.roi_width)
+ self.dtype = np.uint16 if self.device.props.sensor_bitdepth > 8 else np.uint8
+ self.device.start_recording()
+
+ @command
+ def Stop(self):
+ self.device.stop_recording()
+
+ @command(dtype_in=str, doc_in="Path and filename to store frame")
+ def Store(self, path):
+ frame = self.grab()
+
+ if HAVE_TIFFFILE:
+ tifffile.imsave(path, frame)
+ else:
+ np.savez(open(path, 'wb'), frame)
+
+
+if __name__ == '__main__':
+ server_run((Camera,))
diff --git a/tango/setup.py b/tango/setup.py
new file mode 100644
index 0000000..8b12153
--- /dev/null
+++ b/tango/setup.py
@@ -0,0 +1,14 @@
+from setuptools import setup
+
+setup(
+ name='tangouca', # jeez
+ version='0.0.1',
+ author='Matthias Vogelgesang',
+ author_email='matthias.vogelgesang@kit.edu',
+ url='http://ufo.kit.edu',
+ license='(?)',
+ description='TANGO server for libuca',
+ long_description='TANGO server for libuca',
+ scripts=['Uca'],
+ install_requires=['PyTango']
+)