[FFmpeg-cvslog] qsvdec: Release packet on decoding failure for mpeg2/vp8/vc1

[Zhong Li]

ffmpeg | branch: master | Zhong Li <zhong.li at intel.com> | Wed Aug 15 17:39:35 2018 +0800| [69caad8959982580504643d36aef22528e4aa6ce] | committer: Luca Barbato

qsvdec: Release packet on decoding failure for  mpeg2/vp8/vc1

H264/265 have been fixed such an issue with commit
559370f2c45110afd8308eec7194437736c323d4.
Similar fixing is needed for other codecs.

Signed-off-by: Zhong Li <zhong.li at intel.com>
Signed-off-by: Luca Barbato <lu_zero at gentoo.org>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=69caad8959982580504643d36aef22528e4aa6ce
---

 libavcodec/qsvdec_other.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/libavcodec/qsvdec_other.c b/libavcodec/qsvdec_other.c
index 150ce0d2ad..47934e9530 100644
--- a/libavcodec/qsvdec_other.c
+++ b/libavcodec/qsvdec_other.c
@@ -138,8 +138,13 @@ static int qsv_decode_frame(AVCodecContext *avctx, void *data,
         }
 
         ret = ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, &s->input_ref);
-        if (ret < 0)
+        if (ret < 0) {
+            /* Drop input packet when failed to decode the packet. Otherwise,
+               the decoder will keep decoding the failure packet. */
+            av_packet_unref(&s->input_ref);
+
             return ret;
+        }
 
         s->input_ref.size -= ret;
         s->input_ref.data += ret;