void MP4RootAtom::FinishOptimalWrite() { // finish writing mdat m_pChildAtoms[GetLastMdatIndex()]->FinishWrite(m_pFile->Use64Bits("mdat")); // find moov atom u_int32_t size = m_pChildAtoms.Size(); MP4Atom* pMoovAtom = NULL; u_int32_t i; for (i = 0; i < size; i++) { if (!strcmp("moov", m_pChildAtoms[i]->GetType())) { pMoovAtom = m_pChildAtoms[i]; break; } } ASSERT(i < size); // rewrite moov so that updated chunkOffsets are written to disk m_pFile->SetPosition(pMoovAtom->GetStart()); u_int64_t oldSize = pMoovAtom->GetSize(); pMoovAtom->Write(); // sanity check u_int64_t newSize = pMoovAtom->GetSize(); ASSERT(oldSize == newSize); }