PARSE_BLOCK_SIZE  471 libavcodec/webp.c     PARSE_BLOCK_SIZE(width, s->height);
PARSE_BLOCK_SIZE  500 libavcodec/webp.c     PARSE_BLOCK_SIZE(s->width, s->height);
PARSE_BLOCK_SIZE  516 libavcodec/webp.c     PARSE_BLOCK_SIZE(s->width, s->height);