Hi Martin, (as you've probably noticed, I'm generally particularly interested in optimization patches, not just the SIMD, but also the general algorithmic thought behind it.)
On Thu, Oct 5, 2017 at 10:58 AM, Martin Vignali <martin.vign...@gmail.com> wrote: > In attach patchs to add a dedicated func for clear_block inside > prores decoding (proresdec2) > The idea here is that N (where N=blocks_per_slice) calls is more expensive than 1 call, which is indeed true. One way we've tried to "fix" this in some decoders is to not call clear_blocks() at all, instead clearing the coefficient arrays in the call to idct() - see e.g. h264/hevc, vp8/9, and probably some more. Given that the prores idct lives in its own proresdspcontext, we could adjust it here as well. The advantage of having 0 calls should be obvious. :-). Ronald _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
