Re: [PATCH v3 1/5] [media] v4l: add porter duff blend controls

2017-07-31 Thread Hans Verkuil
On 07/31/2017 05:07 AM, Jacob Chen wrote: > At peresent, we don't have a control for Compositing and Blend. > All drivers are just doing copies while actually many hardwares > supports more functions. > > So Adding V4L2 controls for Compositing and Blend, used for for > composting streams. > > Th

[PATCH v3 1/5] [media] v4l: add porter duff blend controls

2017-07-30 Thread Jacob Chen
At peresent, we don't have a control for Compositing and Blend. All drivers are just doing copies while actually many hardwares supports more functions. So Adding V4L2 controls for Compositing and Blend, used for for composting streams. The values are based on porter duff operations. Defined in b