shithub: libvpx

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vp8: Set default denoiser_decision to copy for UV channel.

Since the UV decision to denoise is based on Y, we need to set
the default/initial denoiser decision_u/v to COPY_BLOCK,
to make sure if no uv_denoiser is applied we still update
(uv)running_avg with source.

Change-Id: I5af1c2afbd40c498cd3de208bea88c837099b24d

--- a/vp8/encoder/denoising.c

+++ b/vp8/encoder/denoising.c

@@ -411,8 +411,8 @@

     MV_REFERENCE_FRAME zero_frame = x->best_zeromv_reference_frame;

     enum vp8_denoiser_decision decision = FILTER_BLOCK;

-    enum vp8_denoiser_decision decision_u = FILTER_BLOCK;

-    enum vp8_denoiser_decision decision_v = FILTER_BLOCK;

+    enum vp8_denoiser_decision decision_u = COPY_BLOCK;

+    enum vp8_denoiser_decision decision_v = COPY_BLOCK;

     if (zero_frame)

     {