Merge commit '549d0bdca53af7a6e0c612ab4b03baecf3a5878f'

* commit '549d0bdca53af7a6e0c612ab4b03baecf3a5878f':
  decode: be more explicit about storing the last packet properties

Also copy pkt->size in extract_packet_props(), as it's needed for
AVFrame.pkt_size

Merged-by: James Almer <jamrial@gmail.com>

libavcodec/internal.h

@@ -138,10 +138,10 @@ typedef struct AVCodecInternal {
     void *thread_ctx;
 
     /**
-     * Current packet as passed into the decoder, to avoid having to pass the
-     * packet into every function.
+     * Properties (timestamps+side data) extracted from the last packet passed
+     * for decoding.
      */
-    const AVPacket *pkt;
+    AVPacket *last_pkt_props;
 
     /**
      * temporary buffer used for encoders to store their bitstream