On Wed, 29 Apr 2009, [UTF-8] Németh Márton wrote: > The parameter of VIDIOC_REQBUFS is a pointer to struct v4l2_requestbuffers. > This structure has reserved fields which has to be filled with zeros > according to the V4L2 API specification, revision 0.24 [1]. As I read the spec, the reserved fields can be used for input from user space if the buffer is of type V4L2_BUF_TYPE_PRIVATE or higher. -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html