commit 43479c6c641b18998982ee52684c742d4a159f4e
author David Barker <david.barker@argondesign.com> Wed Nov 30 10:34:20 2016 +0000
committer Debargha Mukherjee <debargha@google.com> Thu Dec 01 00:04:03 2016 +0000
tree ae46b645e4fa7225c4137dcc04b3dd942286cf9a
parent 691a6901a4e7532147d19140a768933f3a294f45

Improve ALL_ZERO flag handling with global motion

Change-Id: I9b2465807c2dd6e356807f3f3555394b382918ad

av1/encoder/bitstream.c

diff --git a/av1/encoder/bitstream.c b/av1/encoder/bitstream.c
index 4915f78..acce688 100644
--- a/av1/encoder/bitstream.c
+++ b/av1/encoder/bitstream.c
@@ -4094,9 +4094,14 @@
   AV1_COMMON *const cm = &cpi->common;
   int frame;
   for (frame = LAST_FRAME; frame <= ALTREF_FRAME; ++frame) {
+#if !CONFIG_REF_MV
+    // With ref-mv, clearing unused global motion models here is
+    // unsafe, and we need to rely on the recode loop to do it
+    // instead. See av1_find_mv_refs for details.
     if (!cpi->global_motion_used[frame]) {
       set_default_gmparams(&cm->global_motion[frame]);
     }
+#endif
     write_global_motion_params(&cm->global_motion[frame],
                                cm->fc->global_motion_types_prob, w);
     /*