From a67e654b6ca5a23f742be565997b115ae17516f5 Mon Sep 17 00:00:00 2001
From: Jingning Han <jingning@google.com>
Date: Wed, 11 Dec 2013 10:57:15 -0800
Subject: [PATCH] Enforce motion search range clamp for sub8x8
This commit constrains the maximal motion search range for sub8x8
blocks to be [-1023, 1023], in the unit of full pixel.
Change-Id: I955b60649364ab410f2453cafd46a496f2fcb43e
---
vp9/encoder/vp9_rdopt.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/vp9/encoder/vp9_rdopt.c b/vp9/encoder/vp9_rdopt.c
index 399c534ec3..fb31f42284 100644
--- a/vp9/encoder/vp9_rdopt.c
+++ b/vp9/encoder/vp9_rdopt.c
@@ -1781,6 +1781,9 @@ static void rd_check_segment_txsize(VP9_COMP *cpi, MACROBLOCK *x,
further_steps = (MAX_MVSEARCH_STEPS - 1) - step_param;
// adjust src pointer for this block
mi_buf_shift(x, i);
+
+ vp9_clamp_mv_min_max(x, &bsi->ref_mv->as_mv);
+
if (cpi->sf.search_method == HEX) {
bestsme = vp9_hex_search(x, &mvp_full.as_mv,
step_param,
--
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