Re: UVC with continuous video buffers.

2011-11-23 Thread Laurent Pinchart
Hi Javier, On Thursday 17 November 2011 11:55:28 javier Martin wrote: On 4 November 2011 11:41, Laurent Pinchart wrote: On Wednesday 02 November 2011 17:33:16 javier Martin wrote: On 2 November 2011 17:12, Devin Heitmueller wrote: I've actually got a very similar issue and have been

Re: UVC with continuous video buffers.

2011-11-17 Thread javier Martin
On 4 November 2011 11:41, Laurent Pinchart laurent.pinch...@ideasonboard.com wrote: Hi Javier, On Wednesday 02 November 2011 17:33:16 javier Martin wrote: On 2 November 2011 17:12, Devin Heitmueller wrote: I've actually got a very similar issue and have been looking into it (an em28xx

Re: UVC with continuous video buffers.

2011-11-04 Thread Laurent Pinchart
Hi Javier, On Wednesday 02 November 2011 17:33:16 javier Martin wrote: On 2 November 2011 17:12, Devin Heitmueller wrote: I've actually got a very similar issue and have been looking into it (an em28xx device on OMAP requiring contiguous physical memory for the hardware H.264 encoder).

Re: UVC with continuous video buffers.

2011-11-04 Thread Hans Verkuil
On Friday 04 November 2011 11:41:28 Laurent Pinchart wrote: Hi Javier, On Wednesday 02 November 2011 17:33:16 javier Martin wrote: On 2 November 2011 17:12, Devin Heitmueller wrote: I've actually got a very similar issue and have been looking into it (an em28xx device on OMAP requiring

Re: UVC with continuous video buffers.

2011-11-04 Thread Laurent Pinchart
Hi Hans, On Friday 04 November 2011 11:58:26 Hans Verkuil wrote: On Friday 04 November 2011 11:41:28 Laurent Pinchart wrote: On Wednesday 02 November 2011 17:33:16 javier Martin wrote: On 2 November 2011 17:12, Devin Heitmueller wrote: I've actually got a very similar issue and have

UVC with continuous video buffers.

2011-11-02 Thread javier Martin
Hi, we have a system with a UVC camera connected to USB to acquire video images and a hardware processor which needs continuous memory buffers to process them. I've been looking at the current version of UVC drivers and it seems it allocates buffers using vmalloc_32() call:

Re: UVC with continuous video buffers.

2011-11-02 Thread Devin Heitmueller
On Wed, Nov 2, 2011 at 11:49 AM, javier Martin javier.mar...@vista-silicon.com wrote: Hi, we have a system with a UVC camera connected to USB to acquire video images and a hardware processor which needs continuous memory buffers to process them. I've been looking at the current version of

Re: UVC with continuous video buffers.

2011-11-02 Thread javier Martin
Hi Devin, thank you for your answer. On 2 November 2011 17:12, Devin Heitmueller dheitmuel...@kernellabs.com wrote: I've actually got a very similar issue and have been looking into it (an em28xx device on OMAP requiring contiguous physical memory for the hardware H.264 encoder).  One thing