atom_free.cpp 1.2 KB

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  1. /*
  2. * The contents of this file are subject to the Mozilla Public
  3. * License Version 1.1 (the "License"); you may not use this file
  4. * except in compliance with the License. You may obtain a copy of
  5. * the License at http://www.mozilla.org/MPL/
  6. *
  7. * Software distributed under the License is distributed on an "AS
  8. * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  9. * implied. See the License for the specific language governing
  10. * rights and limitations under the License.
  11. *
  12. * The Original Code is MPEG4IP.
  13. *
  14. * The Initial Developer of the Original Code is Cisco Systems Inc.
  15. * Portions created by Cisco Systems Inc. are
  16. * Copyright (C) Cisco Systems Inc. 2001. All Rights Reserved.
  17. *
  18. * Contributor(s):
  19. * Dave Mackie [email protected]
  20. */
  21. #include "mp4common.h"
  22. MP4FreeAtom::MP4FreeAtom()
  23. : MP4Atom("free")
  24. {
  25. }
  26. void MP4FreeAtom::Read()
  27. {
  28. Skip();
  29. }
  30. void MP4FreeAtom::Write()
  31. {
  32. ASSERT(m_pFile);
  33. bool use64 = (GetSize() > (0xFFFFFFFF - 8));
  34. BeginWrite(use64);
  35. #if 1
  36. for (uint64_t ix = 0; ix < GetSize(); ix++) {
  37. m_pFile->WriteUInt8(0);
  38. }
  39. #else
  40. m_pFile->SetPosition(m_pFile->GetPosition() + GetSize());
  41. #endif
  42. FinishWrite(use64);
  43. }