On Tue, 7 Feb 2017 12:54:23 -0500 "Ronald S. Bultje" <rsbul...@gmail.com> wrote:
> Hi, > > On Tue, Feb 7, 2017 at 12:04 PM, <u-9...@aetey.se> wrote: > > > cinepak, rgb24 19.7 (via the fast bilinear swscaler) > > cinepak, internal rgb565 6.0 > > > The reason that your decoder-integrated colorspace convertor is so much > faster than swscale is because swscale is converting internally to yuv420p > using a scaling filter, and then back to rgb565 using another scaling > filter. This is "easily" solved by adding a direct (possibly > x86-simd-accelerated) rgb24-to-rgb565 converter into > libswscale/swscale_unscaled.c, which would likely have nearly identical > performance to what you're seeing here. Possibly even faster, because > you're allowing for simd optimizations. I'm also wondering how much performance the 3 byte rgb24 format costs as opposed to using a 4 byte padded format like rgb0. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
