QCCTV allows you to use your devices (computers, mobile phones, tablets, etc.) to implement a CCTV network in your LAN.

Besides security, QCCTV can have many uses, such as recording a video with multiple cameras at once or tell if your cat is plotting to kill you.

The QCCTV suite consists of two applications:

• QCCTV Camera, which streams your camera's live images to the LAN
• QCCTV Station, which receives camera streams from the LAN and manages each camera individually

How QCCTV works

• QCCTV Cameras broadcast a small UDP packet periodically to make themselves visible to any QCCTV Station in the same network.
• Once the UDP packet is received, the QCCTV Station will attempt to establish a TCP connection with the camera
• Once the TCP connection is established, the camera will send these packets periodically:
  • Binary JSON data containing camera status and information (with an UDP socket)
  • Compressed camera frame (in JPEG format) and CRC32 checksum of the data (with a TCP socket)
• On the other hand, the QCCTV Station will respond to camera packets with the following data:
  • Current FPS and desired FPS
  • Current resolution and desired resolution
  • Current zoom and desired zoom
  • Current flash light status and desired flashlight status
  • Focus request byte (if applicable)
  • Current and desired values are sent in order to avoid overwritting any configuration set locally by the camera; If the current (or "old") value in the packet does not correspond to the current value used by the camera, then the QCCTV Camera shall ignore the request
• If allowed, the QCCTV Camera shall auto-regulate its resolution to improve communication speeds. This option can be configured remotely by the QCCTV Station or locally, by the camera itself

Networking Code

• The ports used by QCCTV are set in this header
• All the stream encoding/decoding code is found in:
  • QCCTV_Communications.h
  • QCCTV_Communications.cpp

Icons

The icons come from the "Global Security" icon set from Aha-Soft and are released under the Creative Commons license.

You can download the icon set from http://aha-soft.com

License

The QCCTV software suite is released under the MIT license.