Date: Mon, 26 Apr 1999 02:52:34 -0700 From: John-Mark Gurney <gurney_j@efn.org> To: Amancio Hasty <hasty@rah.star-gate.com> Cc: multimedia@freebsd.org Subject: Re: brooktree driver problems?? Message-ID: <19990426025234.21776@hydrogen.nike.efn.org> In-Reply-To: <199904260921.CAA05739@rah.star-gate.com>; from Amancio Hasty on Mon, Apr 26, 1999 at 02:21:45AM -0700 References: <19990426020600.34104@hydrogen.nike.efn.org> <199904260921.CAA05739@rah.star-gate.com>
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Amancio Hasty scribbled this message on Apr 26:
> Whats your CPU & PCI chipset ??
sorry, I had my machine get frozen by a stupid typo so I had to reboot
when I was writting a message with this info...
CPU: AMD-K6tm w/ multimedia extensions (225.01-MHz 586-class CPU)
Origin = "AuthenticAMD" Id = 0x562 Stepping=2
Features=0x8001bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,MMX>
chip0: <VIA 82C595 (Apollo VP2) system controller> rev 0x03 on pci0.0.0
chip1: <VIA 82C586 PCI-ISA bridge> rev 0x27 on pci0.7.0
bktr0: <BrookTree 848> rev 0x11 int a irq 11 on pci0.9.0
STB TV/PCI, Temic NTSC tuner, dbx stereo.
sc0 not found at 0x60
(no video on this machine at all)...
> Well, I get :
> time ./videocapture
> micro seconds 5114
> 0.000u 0.012s 0:06.12 0.1% 0+0k 0+0io 0pf+0w
I got:
frame 301
micro seconds 11377
12.38 real 0.00 user 0.02 sys
which is actually better than before... that's ~24.39fps which is
actually what I'm seeing usually with my program...
> I added the following to program:
[...]
> You do have a sleep in your program??
>
> Because the code segment which you mailed didn't
> have it.
actually, it does have a sleep(1)... I forgot to mail you that extra
line.. it's right after the mmap line before that function returns...
I've tried looking at the data I get and I usually get only half the
display of actual data and some residue... which means it looks like
I'm only getting one of the two fields...
> "
> sleep(1); /* Let the unit settled down -- very important
> and this only needed when a video input or
> video format is specified */
> "
>
> > 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
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