shithub: libvpx

Info  •  Files  •  Log  •  Branches

Fix chroma output when scaling

The encode-side scaling was not indexing through the image correctly
for the chroma planes, causing a green checkerboard-like output in
the unit test.

Change-Id: I9abbd73615404cd6699588be3e64dcf59005bc14

--- a/vp9/encoder/vp9_onyx_if.c

+++ b/vp9/encoder/vp9_onyx_if.c

@@ -2146,7 +2146,7 @@

         const int dst_stride = dst_strides[i];

         uint8_t *src = srcs[i] + y / factor * in_h / out_h * src_stride +

                                  x / factor * in_w / out_w;

-        uint8_t *dst = dsts[i] + y * dst_stride + x;

+        uint8_t *dst = dsts[i] + y / factor * dst_stride + x / factor;

         vp9_convolve8(src, src_stride, dst, dst_stride,

                       vp9_sub_pel_filters_8[x_q4 & 0xf], 16 * in_w / out_w,