On 1/10/23, Helmrich, Christian <christian.helmr...@hhi.fraunhofer.de> wrote: > Hi, > > please find attached a patch (relative to FFmpeg master as of early January > 10, 2023) > adding avfilter support for extended perceptually weighted peak > signal-to-noise ratio > (XPSNR) measurements for videos, as described in the related addition to > filters.texi. > > The XPSNR code was originally vectorized using SIMD intrinsics, but we > concluded that > FFmpeg code requires asm instead of such intrinsics, so we let gcc > auto-convert these
So its better to use that instead of human written assembly? Does clang generate faster code without this asm? > instructions to pure assembly; see the vf_xpsnr.asm file. If the added asm > code is too > lengthy, intrinsics would be possible, or something else is missing, please > let us know. > Please remove SLICE_THREADS related flag as there is no call to execute to filter in slices. Please remove stdbool.h header and adapt code to compile without it. > Best, > > Christian Helmrich and Christian Stoffers > Fraunhofer HHI > _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
