193     overlay::Writeback *wb = overlay::Writeback::getInstance();  in prepare()  local
197         if(!wb->setSecure(isSecureBuffer(hnd))) {  in prepare()
203     if(!wb->configureDpyInfo(hnd->width, hnd->height)) {  in prepare()
210     int format = ovutils::getHALFormat(wb->getOutputFormat());  in prepare()
220     if(!wb->configureMemory(size)) {  in prepare()
273     overlay::Writeback *wb = overlay::Writeback::getInstance();  in draw()  local
274     if(!wb->writeSync()) {  in draw()
282     overlay::Writeback *wb = overlay::Writeback::getInstance();  in getDstFd()  local
283     return wb->getDstFd();  in getDstFd()
287     overlay::Writeback *wb = overlay::Writeback::getInstance();  in getDstOffset()  local
288     return wb->getOffset();  in getDstOffset()