VP8_CHUNK_HEADER_SIZE  196 coders/webp.c      if (memcmp(stream+offset,VP8_CHUNK_HEADER,VP8_CHUNK_HEADER_SIZE) == 0)
VP8_CHUNK_HEADER_SIZE  197 coders/webp.c        return(*(stream+offset+VP8_CHUNK_HEADER_SIZE) == LOSSLESS_FLAG ?