[FFmpeg-cvslog] avcodec/hevc_ps: Explicitly check num_tile_* for negative values

[Michael Niedermayer]

ffmpeg | branch: release/2.2 | Michael Niedermayer <michaelni at gmx.at> | Wed May 13 13:53:33 2015 +0200| [003b006c85649ea3efb903874051c3405cdbcc2b] | committer: Michael Niedermayer

avcodec/hevc_ps: Explicitly check num_tile_* for negative values

This fixes nothing but maybe helps coverity which does not see that this is failing later

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit 65e5032955cb5022f0f39160aa3839f0799456bd)

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=003b006c85649ea3efb903874051c3405cdbcc2b
---

 libavcodec/hevc_ps.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavcodec/hevc_ps.c b/libavcodec/hevc_ps.c
index 85d1213..a8534be8 100644
--- a/libavcodec/hevc_ps.c
+++ b/libavcodec/hevc_ps.c
@@ -1129,14 +1129,14 @@ int ff_hevc_decode_nal_pps(HEVCContext *s)
     if (pps->tiles_enabled_flag) {
         pps->num_tile_columns = get_ue_golomb_long(gb) + 1;
         pps->num_tile_rows    = get_ue_golomb_long(gb) + 1;
-        if (pps->num_tile_columns == 0 ||
+        if (pps->num_tile_columns <= 0 ||
             pps->num_tile_columns >= sps->width) {
             av_log(s->avctx, AV_LOG_ERROR, "num_tile_columns_minus1 out of range: %d\n",
                    pps->num_tile_columns - 1);
             ret = AVERROR_INVALIDDATA;
             goto err;
         }
-        if (pps->num_tile_rows == 0 ||
+        if (pps->num_tile_rows <= 0 ||
             pps->num_tile_rows >= sps->height) {
             av_log(s->avctx, AV_LOG_ERROR, "num_tile_rows_minus1 out of range: %d\n",
                    pps->num_tile_rows - 1);