[FFmpeg-devel] [PATCH 2/7] avcodec/h264dec: store count of slice_table_base with local variable

[lance.lmwang at gmail.com]

From: Limin Wang <lance.lmwang at gmail.com>

Signed-off-by: Limin Wang <lance.lmwang at gmail.com>
---
 libavcodec/h264dec.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/libavcodec/h264dec.c b/libavcodec/h264dec.c
index 7c7a63c..b03e6ed 100644
--- a/libavcodec/h264dec.c
+++ b/libavcodec/h264dec.c
@@ -182,6 +182,7 @@ int ff_h264_alloc_tables(H264Context *h)
 {
     const int big_mb_num = h->mb_stride * (h->mb_height + 1);
     const int row_mb_num = 2*h->mb_stride*FFMAX(h->nb_slice_ctx, 1);
+    const int slice_tsize = big_mb_num + h->mb_stride;
     int x, y;
 
     FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->intra4x4_pred_mode,
@@ -191,7 +192,7 @@ int ff_h264_alloc_tables(H264Context *h)
     FF_ALLOCZ_OR_GOTO(h->avctx, h->non_zero_count,
                       big_mb_num * 48 * sizeof(uint8_t), fail)
     FF_ALLOCZ_OR_GOTO(h->avctx, h->slice_table_base,
-                      (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base), fail)
+                      slice_tsize * sizeof(*h->slice_table_base), fail)
     FF_ALLOCZ_OR_GOTO(h->avctx, h->cbp_table,
                       big_mb_num * sizeof(uint16_t), fail)
     FF_ALLOCZ_OR_GOTO(h->avctx, h->chroma_pred_mode_table,
@@ -209,7 +210,7 @@ int ff_h264_alloc_tables(H264Context *h)
                       big_mb_num * sizeof(uint8_t), fail)
 
     memset(h->slice_table_base, -1,
-           (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base));
+           slice_tsize * sizeof(*h->slice_table_base));
     h->slice_table = h->slice_table_base + h->mb_stride * 2 + 1;
 
     FF_ALLOCZ_OR_GOTO(h->avctx, h->mb2b_xy,
-- 
1.8.3.1