On Fri, Dec 20, 2024 at 07:53:33PM +0100, Michael Niedermayer wrote: > Hi Janne > > On Thu, Dec 19, 2024 at 10:12:22PM +0100, Janne Grunau wrote: > > This reduces the amount the horizontal filters read beyond the filter > > width to a consistent 1 pixel. The data is not used so this is usually > > not noticeable. It becomes a problem when the application allocates > > frame buffers only for the aligned picture size and the end of it is at > > a page boundary. This happens for picture sizes which are a multiple of > > the page size like 1280x640. The frame buffer allocation is based on > > its most likely done via mmap + MAP_ANONYMOUS so start and end of the > > buffer are page aligned and the previous and next page are not > > necessarily mapped. > > This mirrors the aarch64 change. > > > > Signed-off-by: Janne Grunau <janne-ffm...@jannau.net> > > --- > > libavcodec/arm/vp9mc_neon.S | 13 ++++++++++--- > > 1 file changed, 10 insertions(+), 3 deletions(-) > > tested on qemu-arm (assuming the standard fate and qemu covers this)
the asm is covered by checkasm and intentionally breaking the functions was detected Janne _______________________________________________ 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".
