[FFmpeg-cvslog] avcodec/realtextdec: add some memory checks

[Clément Bœsch]

ffmpeg | branch: master | Clément Bœsch <u at pkh.me> | Sat Sep 20 22:11:45 2014 +0200| [8e7808b524d1e2a0063b1a0476a1fee2ac5742b5] | committer: Clément Bœsch

avcodec/realtextdec: add some memory checks

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8e7808b524d1e2a0063b1a0476a1fee2ac5742b5
---

 libavcodec/realtextdec.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/libavcodec/realtextdec.c b/libavcodec/realtextdec.c
index 4578897..602df4c 100644
--- a/libavcodec/realtextdec.c
+++ b/libavcodec/realtextdec.c
@@ -59,6 +59,7 @@ static int rt_event_to_ass(AVBPrint *buf, const char *p)
 static int realtext_decode_frame(AVCodecContext *avctx,
                                  void *data, int *got_sub_ptr, AVPacket *avpkt)
 {
+    int ret = 0;
     AVSubtitle *sub = data;
     const char *ptr = avpkt->data;
     AVBPrint buf;
@@ -67,9 +68,11 @@ static int realtext_decode_frame(AVCodecContext *avctx,
     // note: no need to rescale pts & duration since they are in the same
     // timebase as ASS (1/100)
     if (ptr && avpkt->size > 0 && !rt_event_to_ass(&buf, ptr))
-        ff_ass_add_rect(sub, buf.str, avpkt->pts, avpkt->duration, 0);
-    *got_sub_ptr = sub->num_rects > 0;
+        ret = ff_ass_add_rect_bprint(sub, &buf, avpkt->pts, avpkt->duration, 0);
     av_bprint_finalize(&buf, NULL);
+    if (ret < 0)
+        return ret;
+    *got_sub_ptr = sub->num_rects > 0;
     return avpkt->size;
 }