CDG_MASK          296 libavcodec/cdgraphics.c     inst    &= CDG_MASK;
CDG_MASK          300 libavcodec/cdgraphics.c     if ((command & CDG_MASK) == CDG_COMMAND) {
CDG_MASK           64 libavformat/cdg.c         if (ret < 1 || (pkt->data[0] & CDG_MASK) == CDG_COMMAND)