DATA_HEADER_SIZE  330 libavformat/asfenc.c     *offset = asf->data_offset + DATA_HEADER_SIZE;
DATA_HEADER_SIZE  751 libavformat/asfenc.c         header_size += 8 + 30 + DATA_HEADER_SIZE;
DATA_HEADER_SIZE  758 libavformat/asfenc.c         header_size -= 8 + 30 + DATA_HEADER_SIZE;
DATA_HEADER_SIZE  798 libavformat/asfenc.c     if (asf_write_header1(s, 0, DATA_HEADER_SIZE) < 0) {