shithub: libvpx

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ref: c66f612c4bf527401701b7b95e0d3886a660fd74
parent: 597ce31ff81e23129f5e76705634c4d5c9c72ef2
author: Tim Kopp <[email protected]>
date: Fri Jul 18 10:15:30 EDT 2014 

VP9 denoiser fix: ref frames now updated properly

The ALT_REF_FRAME is now updated in the case of a KEY_FRAME in the VP9 denoiser.

Change-Id: Idf9a9772706f50e774fb240afcc01db38841043c


--- a/vp9/encoder/vp9_denoiser.c
+++ b/vp9/encoder/vp9_denoiser.c
@@ -345,10 +345,9 @@
                                     int refresh_last_frame) {
   if (frame_type == KEY_FRAME) {
     int i;
-    copy_frame(denoiser->running_avg_y[LAST_FRAME], src);
-    for (i = 2; i < MAX_REF_FRAMES - 1; i++) {
-      copy_frame(denoiser->running_avg_y[i],
-                 denoiser->running_avg_y[LAST_FRAME]);
+    // Start at 1 so as not to overwrite the INTRA_FRAME
+    for (i = 1; i < MAX_REF_FRAMES; ++i) {
+      copy_frame(denoiser->running_avg_y[i], src);
     }
   } else {  /* For non key frames */
     if (refresh_alt_ref_frame) {