Introduction

The purpose of the ICS Camera Control Framework (CCF) is to provide an SDK used for integrating DCS solutions used typically for controlling COTS cameras used in the context of instrument control and for WFS; other use cases of COTS cameras may exist.

Eventhough the main purpose of CCF is to act as an SDK, the necessary tools to cover the most common use cases are provided within the package and in many cases it may be possible to use one of the provided DCS binaries out-of-the-box, but in most cases probably some adaptation in the form of adapters to be implemented, may be needed to cover the specific requirements of the individual context.

Scope

The scope of this manual is developers, integrating DCS solutions, based on the CCF SDK and for operations personnel, using a given DCS solution, based on the CCF SDK.

Main Deliverables

In this version of CCF, the following main deliverables are provided by the CCF Project:

• CCF Control Application with GigE Visision support.

• CCF Control Application providing only simulation.

• Data Processing Recipe implementing finding the the centroid of an image.

• Data publishers for FITS files and the DDT.

• A C++ client interface class + command line utility.

• A Python client interface class + command line utility.

• A small tool to generate FITS cube image sequences for the simulation mode.

Disclaimer

The CCF is a product which is stil under development as well as other ELT SW components. It is expected that modifications will be introduced in the CCF component in connection with future releases, which are not backwards compatible. An example is the configuration handling, which may be re-implemented to use the CII Configuration Service. Other changes will be adoptation of the CII Error Handling Service and CII OLDB Service and final handling of setup parameters. Moreover, some features have not yet been implemented, e.g., some commands of the CII Request/Response interfaces used, are not yet provided.

Acronyms

DB	Database
CCF	Camera Control Framework
DCS	Detector Control Software
DDT	Data Display Tool
CCS	Central Control System
ELT	Extremely Large Telescope
FITS	Flexible Image Transportation System
GUI	Graphical User Interface
HW	Hardware
ICS	Instrument Control System
LCS	Local Control System
OLDB	Online Database
RAD	Rapid Application Development
ROI	Region Of Interest
SCXML	State Chart XML
SW	Software
WFS	Wavefront Sensor

Nomenclature

Acquisition Thread	The thread executed internally to handle the acquisition of data from the camera and other interaction.
Adapter	Class derived from a base class provided by the CCF Package, implementing a customisable behaviour and logic of specific CCF DCS instances.
Camera Name Mapping	YAML file used to map the generic names for parameters, used by a Communication Adapter, into the specific parameter names defined by the camera.
Configuration/ Configuration Parameter	The Configuration refers to properties of the system, controlling the behaviour and execution, which are loaded when the application starts up.
Control Application	The CCF Control, main application, ececuted to control and acquire the associated camera. Often referred to as “CCF Control”, for short.
Communication Adapter	Implements a specific communication protocol.
Data Publisher Adapter	Implements publishing of data to various types of targets, e.g. FITS files or the DDT. Also referred to as “Data Publisher”, for short.
Deployment Module	A WAF module used for generating a specific version of a CCF Control executable.
Dictionary	Standard ICS Dictionary providing information about parameters to be written in output data product files.
Initialisation Setup	Setup file loaded while starting up the application. It provides default values for the setup parameters.
Metadata Name Mapping	YAML file used to map the generic names for metadata parameters, used (generated) e.g. by a Communication Adapter, into the specific metadata parameter names to be written in the output data product file.
Non-Recording Data Publisher	Data Publisher which transmit the image data to other application software.
Output Data Products	Files generated on disk containing data acquired and possibly processed by the DCS application.
Processing Pipeline	Refers to an internal Processing Thread with its registered Processing Recipes and associated Publisher Thread, in turn, with its registered Data Publishers.
Processing Recipe Adapter	Provides on-the-fly processing of image frames. Also referred to as “Processing Recipe” for short.
Recording Data Publisher	Data Publisher generating Output Data Products hosting the image data.
Recording Session	The execution of Output Data Product generation, following a “recif::RecStart” request.
Setup/Setup Parameter	The Setup refers to properties of the system, controlling the behaviour and execution, which can be altered at run-time.
Standard Adapter	Adapter considered of common interest and thus provided by the CCF Package.
Standard Data Publisher	Data Publisher considered of common interest and thus provided by the CCF Package.