Upstream version 10.39.225.0

[platform/framework/web/crosswalk.git] / src / third_party / libvpx / source / libvpx / vp8 / encoder / ethreading.c

diff --git a/src/third_party/libvpx/source/libvpx/vp8/encoder/ethreading.c b/src/third_party/libvpx/source/libvpx/vp8/encoder/ethreading.c
index d4b17ce..7b8b51f 100644 (file)
--- a/src/third_party/libvpx/source/libvpx/vp8/encoder/ethreading.c
+++ b/src/third_party/libvpx/source/libvpx/vp8/encoder/ethreading.c
@@ -206,6 +206,21 @@ THREAD_FUNCTION thread_encoding_proc(void *p_data)
                         }
 
 #endif
+                        // Keep track of how many (consecutive) times a  block
+                        // is coded as ZEROMV_LASTREF, for base layer frames.
+                        // Reset to 0 if its coded as anything else.
+                        if (cpi->current_layer == 0) {
+                          if (xd->mode_info_context->mbmi.mode == ZEROMV &&
+                              xd->mode_info_context->mbmi.ref_frame ==
+                                  LAST_FRAME) {
+                            // Increment, check for wrap-around.
+                            if (cpi->consec_zero_last[map_index+mb_col] < 255)
+                              cpi->consec_zero_last[map_index+mb_col] +=
+                                  1;
+                          } else {
+                            cpi->consec_zero_last[map_index+mb_col] = 0;
+                          }
+                        }
 
                         /* Special case code for cyclic refresh
                          * If cyclic update enabled then copy