On 6/23/17 1:47 AM, Ben Chang wrote: > Hi, > > Please help review this nvenc patch for input surface optimization. > > This patch aims to reduce the number of input/output surfaces NVENC > allocates per session. Previous default sets allocated surfaces to 32 > (unless there is user specified param or lookahead involved). Having > large number of surfaces consumes extra video memory (esp for higher > resolution encoding). The patch changes the surfaces calculation for > default, B-frames, lookahead scenario respectively. > > Change in location of surfaces and async_depth determination. Putting > it prior to rate control setup. Current code limits lookahead depth > to be 27 (default surface (32) - P interval (1) - 4). > > The other change involves surface selection. Previously, if a session > allocates x surfaces, only x-1 surfaces are used (due to combination > of output delay and lock toggle logic). To prevent unused surfaces, > changing surface rotation to using predefined fifo. > > Miscellaneous - add "auto" option in level. (was approved in a > previous patch that never propagated into the repository)
There are some style issue, beside that the logic seems fine. I'll amend and split the patch in a set of 3, please ping me if it doesn't land during the weekend. lu _______________________________________________ libav-devel mailing list libav-devel@libav.org https://lists.libav.org/mailman/listinfo/libav-devel
