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avcodec/realtextdec: add some memory checks

This commit is contained in:
Clément Bœsch 2014-09-20 22:11:45 +02:00
parent 27a9bee243
commit 8e7808b524
1 changed files with 5 additions and 2 deletions
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7
libavcodec/realtextdec.c
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@ -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;
}