shithub: libvpx

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VP9: Pass NULL scale_factors ptr when not scaling

to vp9_setup_pre_planes(), preventing the function
unscaled_value() from being called.  unscaled_value()
returns the same value that was passed in.  See
scaled_buffer_offset() in vp9_reconinter.h.

Change-Id: I2a6fbaf07972c2f212834929d29a2cbe72e399c3

--- a/vp9/decoder/vp9_decodeframe.c

+++ b/vp9/decoder/vp9_decodeframe.c

@@ -737,7 +737,8 @@

                          "Reference frame has invalid dimensions");

     is_scaled = vp9_is_scaled(sf);

-    vp9_setup_pre_planes(xd, ref, ref_buf->buf, mi_row, mi_col, sf);

+    vp9_setup_pre_planes(xd, ref, ref_buf->buf, mi_row, mi_col,

+                         is_scaled ? sf : NULL);

     xd->block_refs[ref] = ref_buf;

     if (sb_type < BLOCK_8X8) {