Fix scaled reference offsets.

Since the reference frame is already scaled, do not scale the offsets.

BUG: b/311489136, b/312656387
Change-Id: Ib346242e7ec8c4d3ed26668fa4094271218278ed
(cherry picked from commit 845a817c056c05e8fe7ae9298be47b949d8aceee)

2 files changed, 60 insertions, 2 deletions

diff --git a/test/encode_api_test.cc b/test/encode_api_test.cc
index 7ca2b5941..6205a56ce 100644
--- a/test/encode_api_test.cc
+++ b/test/encode_api_test.cc
@@ -685,6 +685,65 @@ TEST(EncodeAPI, Buganizer312517065) {
   encoder.Encode(false);
 }
 
+// This is a test case from clusterfuzz: based on b/311489136.
+// Encode a few frames with multiple change config call
+// with different frame size.
+TEST(EncodeAPI, Buganizer311489136) {
+  VP9Encoder encoder(1);
+
+  // Set initial config.
+  encoder.Configure(12, 1678, 620, VPX_VBR, VPX_DL_GOOD_QUALITY);
+
+  // Encode first frame.
+  encoder.Encode(true);
+
+  // Change config.
+  encoder.Configure(3, 1678, 202, VPX_CBR, VPX_DL_GOOD_QUALITY);
+
+  // Encode 2nd frame with new config, set delta frame.
+  encoder.Encode(false);
+
+  // Change config again.
+  encoder.Configure(8, 1037, 476, VPX_CBR, VPX_DL_REALTIME);
+
+  // Encode 3rd frame with new config, set delta frame.
+  encoder.Encode(false);
+
+  // Change config again.
+  encoder.Configure(0, 580, 620, VPX_CBR, VPX_DL_GOOD_QUALITY);
+
+  // Encode 4th frame with same config, set delta frame.
+  encoder.Encode(false);
+}
+
+// This is a test case from clusterfuzz: based on b/312656387.
+// Encode a few frames with multiple change config call
+// with different frame size.
+TEST(EncodeAPI, Buganizer312656387) {
+  VP9Encoder encoder(1);
+
+  // Set initial config.
+  encoder.Configure(16, 1, 1024, VPX_CBR, VPX_DL_REALTIME);
+
+  // Change config.
+  encoder.Configure(15, 1, 1024, VPX_VBR, VPX_DL_REALTIME);
+
+  // Encode first frame.
+  encoder.Encode(true);
+
+  // Change config again.
+  encoder.Configure(14, 1, 595, VPX_VBR, VPX_DL_GOOD_QUALITY);
+
+  // Encode 2nd frame with new config.
+  encoder.Encode(true);
+
+  // Change config again.
+  encoder.Configure(2, 1, 1024, VPX_VBR, VPX_DL_GOOD_QUALITY);
+
+  // Encode 3rd frame with new config, set delta frame.
+  encoder.Encode(false);
+}
+
 class EncodeApiGetTplStatsTest
     : public ::libvpx_test::EncoderTest,
       public ::testing::TestWithParam<const libvpx_test::CodecFactory *> {
diff --git a/vp9/encoder/vp9_encodeframe.c b/vp9/encoder/vp9_encodeframe.c
index b98fd8457..ddf47c128 100644
--- a/vp9/encoder/vp9_encodeframe.c
+++ b/vp9/encoder/vp9_encodeframe.c
@@ -3451,8 +3451,7 @@ static void simple_motion_search(const VP9_COMP *const cpi, MACROBLOCK *const x,
 
   assert(yv12 != NULL);
   if (!yv12) return;
-  vp9_setup_pre_planes(xd, 0, yv12, mi_row, mi_col,
-                       &cm->frame_refs[ref - 1].sf);
+  vp9_setup_pre_planes(xd, 0, yv12, mi_row, mi_col, NULL);
   mi->ref_frame[0] = ref;
   mi->ref_frame[1] = NO_REF_FRAME;
   mi->sb_type = bsize;