Re: [PATCH 4/6 v5] uvcvideo: add a metadata device node

2017-10-18 Thread Laurent Pinchart
Hi Guennadi, On Wednesday, 18 October 2017 10:32:10 EEST Guennadi Liakhovetski wrote: > On Fri, 28 Jul 2017, Hans Verkuil wrote: > > On 07/28/2017 02:33 PM, Guennadi Liakhovetski wrote: > >> Some UVC video cameras contain metadata in their payload headers. This > >> patch extracts that data,

Re: [PATCH 4/6 v5] uvcvideo: add a metadata device node

2017-10-18 Thread Guennadi Liakhovetski
Hi Hans, Thanks for your comment. On Fri, 28 Jul 2017, Hans Verkuil wrote: > On 07/28/2017 02:33 PM, Guennadi Liakhovetski wrote: > > Some UVC video cameras contain metadata in their payload headers. This > > patch extracts that data, adding more clock synchronisation information, > > on both

Re: [PATCH 4/6 v5] uvcvideo: add a metadata device node

2017-07-28 Thread Guennadi Liakhovetski
Hi Hans, On Fri, 28 Jul 2017, Hans Verkuil wrote: > On 07/28/2017 02:33 PM, Guennadi Liakhovetski wrote: [snip] > > +/** > > + * struct uvc_meta_buf - metadata buffer building block > > + * @ns - system timestamp of the payload in nanoseconds > > + * @sof- USB Frame

Re: [PATCH 4/6 v5] uvcvideo: add a metadata device node

2017-07-28 Thread Hans Verkuil
On 07/28/2017 02:33 PM, Guennadi Liakhovetski wrote: > Some UVC video cameras contain metadata in their payload headers. This > patch extracts that data, adding more clock synchronisation information, > on both bulk and isochronous endpoints and makes it available to the > user space on a separate

[PATCH 4/6 v5] uvcvideo: add a metadata device node

2017-07-28 Thread Guennadi Liakhovetski
Some UVC video cameras contain metadata in their payload headers. This patch extracts that data, adding more clock synchronisation information, on both bulk and isochronous endpoints and makes it available to the user space on a separate video node, using the V4L2_CAP_META_CAPTURE capability and