avcodec/clearvideo: display warning if decoder overreads input

[ffmpeg] / libavcodec / cbs_mpeg2.c

diff --git a/libavcodec/cbs_mpeg2.c b/libavcodec/cbs_mpeg2.c
index 5bb2e1e107c7ef7096b03f2f7ea407e2c4751038..bfb64a0851192d555768cba9dfcafe3f6c3cdd0d 100644 (file)
--- a/libavcodec/cbs_mpeg2.c
+++ b/libavcodec/cbs_mpeg2.c
@@ -369,7 +369,7 @@ static int cbs_mpeg2_assemble_fragment(CodedBitstreamContext *ctx,
     for (i = 0; i < frag->nb_units; i++)
         size += 3 + frag->units[i].data_size;
 
-    frag->data_ref = av_buffer_alloc(size);
+    frag->data_ref = av_buffer_alloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
     if (!frag->data_ref)
         return AVERROR(ENOMEM);
     data = frag->data_ref->data;
@@ -388,6 +388,7 @@ static int cbs_mpeg2_assemble_fragment(CodedBitstreamContext *ctx,
 
     av_assert0(dp == size);
 
+    memset(data + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
     frag->data      = data;
     frag->data_size = size;