CMYG support in V4L2
Hello,
I'm working on an old driver called "qcamvc" for Connectix QuickCam VC webcams (parallel port and USB models), found here:
http://sourceforge.net/projects/usb-quickcam-vc/
Luckily, it was modified last year to compile with 3.x kernels.
After trivial modification (mfr and model), it works with parallel-port QuickCam Pro (sort of - only at 320x240 and with vertical lines on the left and blank part at the top). I don't have QuickCam VC (yet).
After removing a lot of code (it's now around 1200 [main] + 660 [parallel] + 320 [usb] lines), one problem still remains: in-kernel colour conversion with software contrast, hue, saturation and gamma.
According to comments in the code, the camera sensor seems to have a CMYG filter, like no other linux-supported camera. So the proper way to support these cameras is to introduce a new pixel format, move the conversion to libv4lconvert and remove all controls not provided by hardware?
Signature · 1 line
Ondrej Zary
Quoted 11 lines · Ondrej Zary
Hello,
I'm working on an old driver called "qcamvc" for Connectix QuickCam VC webcams (parallel port and USB models), found here:
http://sourceforge.net/projects/usb-quickcam-vc/Luckily, it was modified last year to compile with 3.x kernels.
After trivial modification (mfr and model), it works with parallel-port QuickCam Pro (sort of - only at 320x240 and with vertical lines on the left and blank part at the top). I don't have QuickCam VC (yet).
Quoted 9 lines
After removing a lot of code (it's now around 1200 [main] + 660 [parallel] + 320 [usb] lines), one problem still remains: in-kernel colour conversion with software contrast, hue, saturation and gamma.
According to comments in the code, the camera sensor seems to have a CMYG filter, like no other linux-supported camera. So the proper way to support these cameras is to introduce a new pixel format, move the conversion to libv4lconvert and remove all controls not provided by hardware?
Correct.
Regards,
Hans