[Elphel-support] change camera parameters through Telnet

[support-list]

> the idea was to unload that work from the camera, and leave all the important processing to the external computer,
Yes, we do the same with Eyesis, there is a lot of processing, but PHP is still used in to control the camera

> like Flavio Soares does, he deactivates the php functions of the camera so it can record at a higher quality jpeg compression.
What does "deactivates the php functions of the camera" mean?

He does not use the camera GUI? Yes, that GUI is rather slow, but not slower that it was before the PHP was implemented in the camera (camvc is rather old - at least 6-7 years).

Using PHP in the camera is the fastest way to control it. Of course, if you will run Drupal there - it will be terribly slow, but just changing few parameters you really need - it will be faster than telnet.

> what would be cool would be to have an abstraction layer that would cover that kind of usage of the camera, for rapid interaction with the camera.

Camera control functionality is implemented in PHP extension - http://wiki.elphel.com/index.php?title=PHP_in_Elphel_cameras . Any simple "API" like in many cameras would definitely limit the functionality, so we decided that user can make her own API, coding it in PHP. It can be universal, but big and likely slow. Or it can be tailored to particular application - and be really fast.

Andrey


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://support.elphel.com/pipermail/support-list_support.elphel.com/attachments/20121213/609f3610/attachment-0002.html>