id,summary,reporter,owner,description,type,status,priority,component,version,resolution,keywords,cc,blockedby,blocking,reproduced,analyzed
1854,libswscale has unreasonable alignment constraints,gjdfgh,,"First of, there's a difference between alignment of single pixels, and alignment of the image start pointer. It's reasonable to demand strict alignment constraints on single pixels, e.g. that a pixels of size 4 should be aligned to 4.

But having a 16 byte alignment on a pixel start pointer is not reasonable. For example, this doesn't allow passing cropped images to libswscale. (Unless the images are cropped in a way they satisfy the alignment constraints again.)

Rather than fully reverting to the slow path in this case, libswscale should use the slow path only for the first N unaligned pixels, until an aligned pixel is reached, and then continue with an accelerated SIMD code path.",enhancement,new,wish,swscale,git-master,,,,,,0,0