From 3c038b6c407eb383e3c4fdd9229cc89257d46222 Mon Sep 17 00:00:00 2001 From: James Zern Date: Wed, 23 Oct 2013 21:33:11 +0200 Subject: vp9/extend_for_intra: avoid crossing tile boundary Change-Id: I0d8a71778aa3c73b8b1673e14053074bb866548b --- vp9/common/vp9_blockd.h | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/vp9/common/vp9_blockd.h b/vp9/common/vp9_blockd.h index 81554470c..ab267a581 100644 --- a/vp9/common/vp9_blockd.h +++ b/vp9/common/vp9_blockd.h @@ -439,16 +439,19 @@ static void extend_for_intra(MACROBLOCKD* const xd, BLOCK_SIZE plane_bsize, } if (xd->mb_to_bottom_edge < 0) { - const int bh = 4 << b_height_log2(plane_bsize); - const int umv_border_start = bh + (xd->mb_to_bottom_edge >> - (3 + pd->subsampling_y)); - int i; - const uint8_t c = buf[(umv_border_start - 1) * stride + x]; - uint8_t *d = &buf[umv_border_start * stride + x]; - - if (y + bh > umv_border_start) - for (i = 0; i < bh; ++i, d += stride) - *d = c; + if (xd->left_available || x >= 0) { + const int bh = 4 << b_height_log2(plane_bsize); + const int umv_border_start = + bh + (xd->mb_to_bottom_edge >> (3 + pd->subsampling_y)); + + if (y + bh > umv_border_start) { + const uint8_t c = buf[(umv_border_start - 1) * stride + x]; + uint8_t *d = &buf[umv_border_start * stride + x]; + int i; + for (i = 0; i < bh; ++i, d += stride) + *d = c; + } + } } } static void set_contexts_on_border(MACROBLOCKD *xd, -- cgit v1.2.3