Date: Mon, 26 Apr 1999 02:21:45 -0700 From: Amancio Hasty <hasty@rah.star-gate.com> To: John-Mark Gurney <gurney_j@resnet.uoregon.edu> Cc: multimedia@freebsd.org Subject: Re: brooktree driver problems?? Message-ID: <199904260921.CAA05739@rah.star-gate.com> In-Reply-To: Your message of "Mon, 26 Apr 1999 02:06:00 PDT." <19990426020600.34104@hydrogen.nike.efn.org>
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Whats your CPU & PCI chipset ??
Well, I get :
time ./videocapture
micro seconds 5114
0.000u 0.012s 0:06.12 0.1% 0+0k 0+0io 0pf+0w
I added the following to program:
gettimeofday(&start, NULL);
c = METEOR_CAP_SINGLE;
ioctl(bt848, METEORCAPTUR, &c);
while (frames < (FRAMES)) {
ioctl(bt848, METEORCAPTUR, &c);
do_write();
};
gettimeofday(&now, NULL);
usec = 1000 * (now.tv_sec - start.tv_sec)
+ (now.tv_usec / 1000 - start.tv_usec / 1000);
printf(" micro seconds %d \n", usec);
You do have a sleep in your program??
Because the code segment which you mailed didn't
have it.
"
sleep(1); /* Let the unit settled down -- very important
and this only needed when a video input or
video format is specified */
"
Cheers
> Amancio Hasty scribbled this message on Apr 26:
> > See if this program works any better for you.
>
> well, I ran the program, and timed how long it took to run and it
> captured 302 frames in 16.37 real seconds (0.02 user, 0.01 sys), which
> means it only got ~18.33 fps which isn't even close... and just so you
> know, I based my code off your earlier version that wrote out jpeg files
> instead of nothing.. :)
>
> I converted your program to use continous mode, and I got even worse
> performance... took 20.22 real seconds which is ~14.94 fps or skipping
> every other frame... though I'm not seeing the signal storm I see with
> my own program... I'm going to double check that I have the bt848 init
> ioctls in the same order you do...
>
> I do plan on publicly releasing the code once I get it done, just
> needs to be cleaned up so you actually provide command line arguments
> to set the various options.. :)
>
> --
> John-Mark Gurney Voice: +1 541 684 8449
> Cu Networking P.O. Box 5693, 97405
>
> "The soul contains in itself the event that shall presently befall it.
> The event is only the actualizing of its thought." -- Ralph Waldo Emerson
--
Amancio Hasty
hasty@star-gate.com
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