Hi Dennis,
On Tuesday 27 April 2010 18:19:01 Dennis Muhlestein wrote:
On 04/27/2010 05:48 AM, Paulo Assis wrote:
2010/4/27 Ian Latterian.lat...@midnightcode.org:
You can grab frames at whatever speed you want, but it's the camera
framerate that will make a difference in the usb bandwidth
Hi Denis,
On Tuesday 04 May 2010 17:37:13 Dennis Muhlestein wrote:
On 04/29/2010 12:40 PM, Dennis Muhlestein wrote:
One idea I've been toying with is to add a semaphore around submitting
the URBs.
In uvc_video.c, where the URBs are submitted, I'd acquire a semephore
for each device
On 05/07/2010 09:10 AM, Laurent Pinchart wrote:
I'm attaching the patch in case anyone wants to play with this or
suggest ways to improve it.
Interesting approach, but definitely a hack. I'm not sure if it has a chance
to make it to the driver.
Most definitely a hack. I just included it
On 04/29/2010 12:40 PM, Dennis Muhlestein wrote:
One idea I've been toying with is to add a semaphore around submitting
the URBs.
In uvc_video.c, where the URBs are submitted, I'd acquire a semephore
for each device currently submitting URBs. The semaphore would limit the
number of devices to
as one thought ;-)
- Original Message -
From: Dennis Muhlestein djmuhlest...@gmail.com
To: linux-uvc-devel@lists.berlios.de
Subject: [Linux-uvc-devel] Multiple camera framerate.
Date: Mon, 26 Apr 2010 14:43:39 -0600
I have a project I've been playing with that uses a number
of cameras
Dennis,
Can anyone suggest a way to configure the cameras at a higher framerate
without overloading the USB bus? Suppose I can read at 10 fps right now
without overloading the USB bus. I'd like to set the framerate to 15, but
still just capture around 10.
You can grab frames at whatever
You can grab frames at whatever speed you want, but it's
the camera
framerate that will make a difference in the usb bandwidth
and not the
amount of frames you get with your application.
So, if you don't take a frame from the UVC driver, it will
simply
continue to refresh an internal buffer
Ian
2010/4/27 Ian Latter ian.lat...@midnightcode.org:
You can grab frames at whatever speed you want, but it's
the camera
framerate that will make a difference in the usb bandwidth
and not the
amount of frames you get with your application.
So, if you don't take a frame from the UVC
On 04/27/2010 04:52 AM, Paulo Assis wrote:
Dennis,
Can anyone suggest a way to configure the cameras at a higher framerate
without overloading the USB bus? Suppose I can read at 10 fps right now
without overloading the USB bus. I'd like to set the framerate to 15, but
still just capture
On 04/27/2010 04:08 AM, Dr. Alexander K. Seewald wrote:
Hi Dennis,
I don't think it is possible to decouple the recording frame rate
from the output framerate, at least not with the UVC firmware out
there. But you could try to switch off auto exposure and set it
manually if your cameras expose
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