Hi Chuanbo, On Tuesday 31 December 2013 19:21:09 Chuanbo Weng wrote: > 2013/12/31 Tomasz Stanislawski <t.stanislaws@xxxxxxxxxxx>: > > Hi Chuanbo Weng, > > > > I suspect that the problem might be caused by difference > > between size of DMABUF object and buffer size in V4L2. > > Thanks for your reply! I agree with you because my experiment prove it > (Even when the bo is bigget than frame size, not smaller!!!). > > > What is the content of v4l2_format returned by VIDIOC_G_FMT? > > The content is V4L2_PIX_FMT_YUYV. (And if the content V4L2_PIX_FMT_MJPEG, > this issue doesn't happen.) Could you please give us the content of all the other fields ? > > What is the content of V4l2_buffer structure passed by VIDIOC_QBUF? Same here. > The fd in v4l2_buffer structure is fd of gem object created by > DRM_IOCTL_MODE_CREATE_DUMB. > > I've upload the program that can reproduce this issue on intel platform. You > just need to clone it from > https://github.com/strgnm/v4l2-dmabuf-test.git > Then build and run as said in README. -- Regards, Laurent Pinchart -- 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
