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From: wei kin <kin2031@yahoo.com>
To: video4linux-list@redhat.com
Subject: Re: Unable to achieve 30fps using 'read()' in C
Date: Sat, 29 Nov 2008 21:26:06 -0800 (PST)	[thread overview]
Message-ID: <980206.90162.qm@web39701.mail.mud.yahoo.com> (raw)

Hi guys, thanks for the advice. However, after I install gspca v2 and run the API example in http://www.linuxtv.org/downloads/video4linux/API/V4L2_API/spec/a16706.htm, I still get only 5fps. I am still wondering how others manage to get higher fps. Or do I need other programming technique such as thread programming to achieve that?

Thanks.
Rgds,
nik2031

On Sat, 2008-11-29 at 00:27 -0800, wei kin wrote:
> I installed qc-usb-0.6.6 and gspca-modules-2.6.18-5-xen-686 in my debian 2.6.18-5-xen. Below are what I got:
> 
> lsusb
> Bus 004 Device 004: ID 046d:0920 Logitech, Inc. QuickCam Express
> 
> dmesg | grep usb
> usbcore: registered new driver usbfs
> usbcore: registered new driver hub
> usb usb1: configuration #1 chosen from 1 choice
> usb usb2: configuration #1 chosen from 1 choice
> usb usb3: configuration #1 chosen from 1 choice
> usb usb4: configuration #1 chosen from 1 choice
> usb 4-1: new full speed USB device using uhci_hcd and address 2
> usb 4-1: configuration #1 chosen from 1 choice
> usb usb5: configuration #1 chosen from 1 choice
>  sda:<6>usb 4-1: USB disconnect, address 2
> usb 4-1: new full speed USB device using uhci_hcd and address 3
> usb 4-1: configuration #1 chosen from 1 choice
> usbcore: registered new driver gspca
> usb 4-1: USB disconnect, address 3
> usb 4-1: new full speed USB device using uhci_hcd and address 4
> usb 4-1: configuration #1 chosen from 1 choice
> 
> dmesg | grep Logitech
> input: ImPS/2 Logitech Wheel Mouse as /class/input/input2
> 
> I did try out the API example in http://www.linuxtv.org/downloads/video4linux/API/V4L2_API/spec/a16706.htm. However, I get error message stated that  '/dev/video0 is no V4L2 device'.
> 
> Do anyone have any idea?



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             reply	other threads:[~2008-11-30  5:26 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-11-30  5:26 wei kin [this message]
2008-11-30  8:58 ` Unable to achieve 30fps using 'read()' in C Nicolas
  -- strict thread matches above, loose matches on Subject: below --
2008-11-29  8:27 wei kin
2008-11-29  8:47 ` Jean-Francois Moine
2008-11-28  8:02 wei kin
2008-11-28 13:02 ` Jonathan Lafontaine
2008-11-28 15:33 ` Jackson Yee

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