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| author | Nicolas George <nicolas.george@normalesup.org> | 2012-02-29 13:46:13 +0100 |
|---|---|---|
| committer | Nicolas George <nicolas.george@normalesup.org> | 2012-03-07 16:41:30 +0100 |
| commit | e5dd4ae7284bb290d8dc8e9cd3f2e035d1d77cd0 (patch) | |
| tree | ccdd8130e4f462aa6fbb7b3b7340c65754b092a8 | |
| parent | 1eabd71c2bed13648643433249386f4b965b5c14 (diff) | |
| download | ffmpeg-e5dd4ae7284bb290d8dc8e9cd3f2e035d1d77cd0.tar.gz | |
assdec: avoid a possible NULL dereference.
| -rw-r--r-- | libavcodec/assdec.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libavcodec/assdec.c b/libavcodec/assdec.c index c5f9cab6e0..47ea3308f4 100644 --- a/libavcodec/assdec.c +++ b/libavcodec/assdec.c @@ -41,8 +41,11 @@ static int ass_decode_frame(AVCodecContext *avctx, void *data, int *got_sub_ptr, int len, size = avpkt->size; while (size > 0) { + int duration; ASSDialog *dialog = ff_ass_split_dialog(avctx->priv_data, ptr, 0, NULL); - int duration = dialog->end - dialog->start; + if (!dialog) + return AVERROR_INVALIDDATA; + duration = dialog->end - dialog->start; len = ff_ass_add_rect(data, ptr, 0, duration, 1); if (len < 0) return len; |