Hi Sakari, On 09/24/2012 03:44 PM, Sakari Ailus wrote: > How about useing a separate video buffer queue for the purpose? That would > provide a nice way to pass it to the user space where it's needed. It'd also > play nicely together with the frame layout descriptors. It's tempting, but doing frame synchronisation in user space in this case would have been painful, if at all possible in reliable manner. It would have significantly complicate applications and the drivers. VIDIOC_STREAMON, VIDIOC_QBUF/DQBUF calls would have been at least roughly synchronized, and applications would have to know somehow which video nodes needs to be opened together. I guess things like that could be abstracted in a library, but what do we really gain for such effort ? And now I can just ask kernel for 2-planar buffers where everything is in place.. Regards, Sylwester -- 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
