shithub: libvpx

Info  •  Files  •  Log  •  Branches

intrapred: sync highbd_d63_predictor w/d63_

8/16/32: ~6%/~18%/~33% faster

previously:
7012ba639 vp9_reconintra: simplify d63_predictor

BUG=webm:1411

Change-Id: Ie775f3a4f7fd74df44754e65686d826a51c2cdc2

--- a/vpx_dsp/intrapred.c

+++ b/vpx_dsp/intrapred.c

@@ -489,15 +489,19 @@

                                         const uint16_t *above,

                                         const uint16_t *left, int bd) {

   int r, c;

+  int size;

   (void)left;

   (void)bd;

-  for (r = 0; r < bs; ++r) {

-    for (c = 0; c < bs; ++c) {

-      dst[c] = r & 1 ? AVG3(above[(r >> 1) + c], above[(r >> 1) + c + 1],

-                            above[(r >> 1) + c + 2])

-                     : AVG2(above[(r >> 1) + c], above[(r >> 1) + c + 1]);

-    }

-    dst += stride;

+  for (c = 0; c < bs; ++c) {

+    dst[c] = AVG2(above[c], above[c + 1]);

+    dst[stride + c] = AVG3(above[c], above[c + 1], above[c + 2]);

+  }

+  for (r = 2, size = bs - 2; r < bs; r += 2, --size) {

+    memcpy(dst + (r + 0) * stride, dst + (r >> 1), size * sizeof(*dst));

+    vpx_memset16(dst + (r + 0) * stride + size, above[bs - 1], bs - size);

+    memcpy(dst + (r + 1) * stride, dst + stride + (r >> 1),

+           size * sizeof(*dst));

+    vpx_memset16(dst + (r + 1) * stride + size, above[bs - 1], bs - size);

   }

 }