From 3861eb6d02fc43d2ed794f6f9e4ad6460404cb7b Mon Sep 17 00:00:00 2001
From: Jerome Jiang <jianj@google.com>
Date: Tue, 27 Nov 2018 12:29:47 -0800
Subject: [PATCH] vp9 svc: copy block if ref buffer in denoiser is NULL.

BUG=b/119097707

Change-Id: I6569306e897da46a44f9d8f2fb28a2a355dd4c2c
---
 vp9/encoder/vp9_denoiser.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/vp9/encoder/vp9_denoiser.c b/vp9/encoder/vp9_denoiser.c
index ab91971a3..8c039b2cb 100644
--- a/vp9/encoder/vp9_denoiser.c
+++ b/vp9/encoder/vp9_denoiser.c
@@ -263,6 +263,14 @@ static VP9_DENOISER_DECISION perform_motion_compensation(
     denoise_layer_idx = num_spatial_layers - spatial_layer - 1;
   }
 
+  // Force copy (no denoise, copy source in denoised buffer) if
+  // running_avg_y[frame] is NULL.
+  if (denoiser->running_avg_y[frame].buffer_alloc == NULL) {
+    // Restore everything to its original state
+    *mi = saved_mi;
+    return COPY_BLOCK;
+  }
+
   if (ctx->newmv_sse > sse_thresh(bs, increase_denoising)) {
     // Restore everything to its original state
     *mi = saved_mi;
-- 
2.40.0