Re: Interfacing a camera to UVC

2017-09-15 Thread Rail Shafigulin
Thanks for answers, everyone! I think I got what I needed. -- Rail Shafigulin Software Engineer Esencia Technologies -- *ESENCIA TECHNOLOGIES, INC.*3945 Freedom Circle, Suite #360, Santa Clara CA 95054 Phone: +1 408 736 8284 Fax: +1

Re: Interfacing a camera to UVC

2017-09-14 Thread Rail Shafigulin
On Thu, Sep 14, 2017 at 10:03 AM, Greg KH wrote: >> Thanks for the reply. That does clarify it. But I still have a few >> more questions. >> >> 1. What makes camera UVC compliant? Is there a document describing >> this? I have access to the hardware (or I should say access to the >> hardware engin

Re: Interfacing a camera to UVC

2017-09-14 Thread Greg KH
On Thu, Sep 14, 2017 at 09:56:26AM -0700, Rail Shafigulin wrote: > On Thu, Sep 14, 2017 at 2:21 AM, Oliver Neukum wrote: > > Hi, > > > > either the camera (to be precise: an interface of it) advertises > > itself as UVC compliant and implements the UVC standard. If that > > is the case the existin

Re: Interfacing a camera to UVC

2017-09-14 Thread Randy Dunlap
On 09/14/17 09:56, Rail Shafigulin wrote: > On Thu, Sep 14, 2017 at 2:21 AM, Oliver Neukum wrote: >> Hi, >> >> either the camera (to be precise: an interface of it) advertises >> itself as UVC compliant and implements the UVC standard. If that >> is the case the existing kernel driver will work an

Re: Interfacing a camera to UVC

2017-09-14 Thread Rail Shafigulin
On Thu, Sep 14, 2017 at 2:21 AM, Oliver Neukum wrote: > Hi, > > either the camera (to be precise: an interface of it) advertises > itself as UVC compliant and implements the UVC standard. If that > is the case the existing kernel driver will work and user space > can use the V4L API to use the cam

Re: Interfacing a camera to UVC

2017-09-14 Thread Oliver Neukum
Am Mittwoch, den 13.09.2017, 15:40 -0700 schrieb Rail Shafigulin: > On Wed, Sep 13, 2017 at 2:28 PM, Greg KH wrote: > > > > There is already a working UVC kernel driver that talks to the correct > > userspace api (which is V4L), in the kernel tree. > > > > So I strongly recommend looking at the

Re: Interfacing a camera to UVC

2017-09-13 Thread Rail Shafigulin
On Wed, Sep 13, 2017 at 2:28 PM, Greg KH wrote: > There is already a working UVC kernel driver that talks to the correct > userspace api (which is V4L), in the kernel tree. > > So I strongly recommend looking at the code we have today if you have > questions about it. What exactly is not working

Re: Interfacing a camera to UVC

2017-09-13 Thread Greg KH
On Wed, Sep 13, 2017 at 01:57:49PM -0700, Rail Shafigulin wrote: > I'm a little unclear about USB Video Class (UVC). In order to use the > camera, does it need to have a Video4Linux driver that "talks" to a > UVC class or it is possible to have a camera that doesn't have a > Video4Linux driver and

Interfacing a camera to UVC

2017-09-13 Thread Rail Shafigulin
I'm a little unclear about USB Video Class (UVC). In order to use the camera, does it need to have a Video4Linux driver that "talks" to a UVC class or it is possible to have a camera that doesn't have a Video4Linux driver and interfaces to a UVC directly? -- Rail Shafigulin Software Engineer Esen