Re: [RFC] Streaming I/O: proposal to expose MMAP/USERPTR/DMABUF capabilities with QUERYCAP

On 04/22/2016 10:23 AM, Jean-Michel Hautbois wrote: > Hi Hans, > > 2016-04-22 10:08 GMT+02:00 Hans Verkuil : >> Hi all, >> >> I have always been unhappy with the fact that it is so hard to tell whether >> the USERPTR and/or DMABUF modes are available with Streaming I/O.

Re: [RFC] Streaming I/O: proposal to expose MMAP/USERPTR/DMABUF capabilities with QUERYCAP

Hi Hans, 2016-04-22 10:08 GMT+02:00 Hans Verkuil : > Hi all, > > I have always been unhappy with the fact that it is so hard to tell whether > the USERPTR and/or DMABUF modes are available with Streaming I/O. QUERYCAP > only tells you if Streaming I/O is available, but not in

[RFC] Streaming I/O: proposal to expose MMAP/USERPTR/DMABUF capabilities with QUERYCAP

Hi all, I have always been unhappy with the fact that it is so hard to tell whether the USERPTR and/or DMABUF modes are available with Streaming I/O. QUERYCAP only tells you if Streaming I/O is available, but not in which flavors. So I propose the following: #define V4L2_CAP_STREAMING_MMAP