swscale/unscaled: allow semiplanar copies

As fixed in the previous commit, this enables semipacked range and
bit depth conversions. Previously these would go through the general
purpose path.

Signed-off-by: Niklas Haas <git@haasn.dev>
Sponsored-by: Sovereign Tech Fund

libswscale/swscale_unscaled.c

@@ -2588,7 +2588,7 @@ void ff_get_unscaled_swscale(SwsInternal *c)
         (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat) &&
          c->chrDstHSubSample == c->chrSrcHSubSample &&
          c->chrDstVSubSample == c->chrSrcVSubSample &&
-         !isSemiPlanarYUV(srcFormat) && !isSemiPlanarYUV(dstFormat))))
+         isSemiPlanarYUV(srcFormat) == isSemiPlanarYUV(dstFormat))))
     {
         if (isPacked(c->opts.src_format))
             c->convert_unscaled = packedCopyWrapper;