PPP2 driver interface_pp.c overhaul

[Jacob Nikom]

Hi,

I noticed another problem with WebCam driver (or at least with
client/main
program). If some pixels in the image window did not change after window
was created, they are remain black. If you wave a hand over them they
turn
into right color, but otherwise they stay black.

Jacob

Peter Pregler wrote:
> 
> On 30-Aug-99 Jacob Nikom wrote:
> > Yes. I applied the Peter's patch and my frame rate dropped from 14 to
> > 5.2.
> > For display I used wcIIcam0.2 program written by Jean-Michel Merliot.
> > Actually, it is quite nice program which allows you to control the
> > camera
> > or driver parameters. It has better image quality than main or main2.
> > It also gives you frame rate.
> 
> Here is a quick patch to increase frame-rate. It is again versus the original
> cpia-0.2. I had fps from 4 to 16 depending on the setting (double/normal/half
> size, with/without compression). For normal size without compression frame rate
> seems to be bound by the parport. For double size it might be cpu (i.e. my slow
> PII-350 cpu ;). The wcIIcam program seems to consume some more cycles than the
> plain main/main2 client. I have a look at that next week when I am back from a
> short holiday. I have a few free days than so I might be able to test and add
> the interrupt-driven code (i.e. implement a blocking read syscall). Maybe that
> will bring some improvements in frame rate too. It is also a basic to do more
> fancy stuff such as a video4linux interface. I have the framework for that but
> need some spare time.
> 
> Greetings, Peter
> 
> -------------------------------
> Even the thought that a ship was waiting to take him back to Earth
> did not wipe out the sense of loss he felt at that moment.
> -------------------------------
> Email: Peter.Pregler@risc.uni-linz.ac.at
> Peter Pregler / RISC, University of Linz, Austria
> 
>   ------------------------------------------------------------------------
>                                 Name: cpia-0.2-timer-1.patch
>    cpia-0.2-timer-1.patch       Type: unspecified type (application/octet-stream)
>                             Encoding: base64
>                          Description: cpia-0.2-timer-1.patch
-----------------------------------------------------------------------------
To unsubscribe from this mailinglist, send the line "unsubscribe vision-webcam" in the
body of a message to "majordomo@errors.no".