Ap4TimsAtom.cpp
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多媒体编程

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Visual C++

  1. /*****************************************************************
  2. |
  3. |    AP4 - tims Atoms 
  4. |
  5. |    Copyright 2002 Gilles Boccon-Gibod & Julien Boeuf
  6. |
  7. |
  8. |    This file is part of Bento4/AP4 (MP4 Atom Processing Library).
  9. |
  10. |    Unless you have obtained Bento4 under a difference license,
  11. |    this version of Bento4 is Bento4|GPL.
  12. |    Bento4|GPL is free software; you can redistribute it and/or modify
  13. |    it under the terms of the GNU General Public License as published by
  14. |    the Free Software Foundation; either version 2, or (at your option)
  15. |    any later version.
  16. |
  17. |    Bento4|GPL is distributed in the hope that it will be useful,
  18. |    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19. |    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20. |    GNU General Public License for more details.
  21. |
  22. |    You should have received a copy of the GNU General Public License
  23. |    along with Bento4|GPL; see the file COPYING.  If not, write to the
  24. |    Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  25. |    02111-1307, USA.
  26. |
  27. ****************************************************************/
  28. /*----------------------------------------------------------------------
  29. |       includes
  30. +---------------------------------------------------------------------*/
  31. #include "Ap4.h"
  32. #include "Ap4TimsAtom.h"
  33. #include "Ap4AtomFactory.h"
  34. #include "Ap4Utils.h"
  35. #include "Ap4Types.h"
  36. /*----------------------------------------------------------------------
  37. |       AP4_TimsAtom::AP4_TimsAtom
  38. +---------------------------------------------------------------------*/
  39. AP4_TimsAtom::AP4_TimsAtom(AP4_UI32 timescale) :
  40.     AP4_Atom(AP4_ATOM_TYPE_TIMS, 4, false),
  41.     m_TimeScale(timescale)
  42. {
  43. }
  44. /*----------------------------------------------------------------------
  45. |       AP4_TimsAtom::AP4_TimsAtom
  46. +---------------------------------------------------------------------*/
  47. AP4_TimsAtom::AP4_TimsAtom(AP4_Size size, AP4_ByteStream& stream) :
  48.     AP4_Atom(AP4_ATOM_TYPE_TIMS, size, false, stream)
  49. {
  50.     stream.ReadUI32(m_TimeScale);
  51. }
  52. /*----------------------------------------------------------------------
  53. |       AP4_TimsAtom::WriteFields
  54. +---------------------------------------------------------------------*/
  55. AP4_Result
  56. AP4_TimsAtom::WriteFields(AP4_ByteStream& stream)
  57. {
  58.     // timescale
  59.     return stream.WriteUI32(m_TimeScale);
  60. }
  61. /*----------------------------------------------------------------------
  62. |       AP4_TimsAtom::InspectFields
  63. +---------------------------------------------------------------------*/
  64. AP4_Result
  65. AP4_TimsAtom::InspectFields(AP4_AtomInspector& inspector)
  66. {
  67.     inspector.AddField("timescale", m_TimeScale);
  68.     return AP4_SUCCESS;
  69. }