- Main Page
- Classes
- Files

# Ap4SttsAtom.h

Go to the documentation of this file.

    00001 /*****************************************************************
    00002 |
    00003 |    AP4 - stts Atoms
    00004 |
    00005 |    Copyright 2003 Gilles Boccon-Gibod & Julien Boeuf
    00006 |
    00007 |
    00008 |    This file is part of Bento4/AP4 (MP4 Atom Processing Library).
    00009 |
    00010 |    Unless you have obtained Bento4 under a difference license,
    00011 |    this version of Bento4 is Bento4|GPL.
    00012 |    Bento4|GPL is free software; you can redistribute it and/or modify
    00013 |    it under the terms of the GNU General Public License as published by
    00014 |    the Free Software Foundation; either version 2, or (at your option)
    00015 |    any later version.
    00016 |
    00017 |    Bento4|GPL is distributed in the hope that it will be useful,
    00018 |    but WITHOUT ANY WARRANTY; without even the implied warranty of
    00019 |    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00020 |    GNU General Public License for more details.
    00021 |
    00022 |    You should have received a copy of the GNU General Public License
    00023 |    along with Bento4|GPL; see the file COPYING.  If not, write to the
    00024 |    Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
    00025 |    02111-1307, USA.
    00026 |
    00027  ****************************************************************/
    00028
    00029 #ifndef _AP4_STTS_ATOM_H_
    00030 #define _AP4_STTS_ATOM_H_
    00031
    00032 /*----------------------------------------------------------------------
    00033 |   includes
    00034 +---------------------------------------------------------------------*/
    00035 #include "Ap4Array.h"
    00036 #include "Ap4Atom.h"
    00037
    00038 /*----------------------------------------------------------------------
    00039 |   AP4_SttsTableEntry
    00040 +---------------------------------------------------------------------*/
    00041 class AP4_SttsTableEntry {
    00042  public:
    00043     AP4_SttsTableEntry() :
    00044         m_SampleCount(0),
    00045         m_SampleDuration(0) {}
    00046     AP4_SttsTableEntry(AP4_Cardinal sample_count,
    00047                        AP4_Duration sample_duration) :
    00048         m_SampleCount(sample_count),
    00049         m_SampleDuration(sample_duration) {}
    00050
    00051     AP4_Cardinal m_SampleCount;
    00052     AP4_Duration m_SampleDuration;
    00053 };
    00054
    00055 /*----------------------------------------------------------------------
    00056 |   AP4_SttsAtom
    00057 +---------------------------------------------------------------------*/
    00058 class AP4_SttsAtom : public AP4_Atom
    00059 {
    00060 public:
    00061     // class methods
    00062     static AP4_SttsAtom* Create(AP4_Size size, AP4_ByteStream& stream);
    00063
    00064     // methods
    00065     AP4_SttsAtom();
    00066     virtual AP4_Result InspectFields(AP4_AtomInspector& inspector);
    00067     virtual AP4_Result GetDts(AP4_Ordinal sample, AP4_TimeStamp& dts);
    00068     virtual AP4_Result AddEntry(AP4_UI32 sample_count, AP4_UI32 sample_duration);
    00069     virtual AP4_Result GetSampleIndexForTimeStamp(AP4_TimeStamp ts,
    00070                                                   AP4_Ordinal&  sample_index);
    00071     virtual AP4_Result WriteFields(AP4_ByteStream& stream);
    00072
    00073 private:
    00074     // methods
    00075     AP4_SttsAtom(AP4_UI32        size,
    00076                  AP4_UI32        version,
    00077                  AP4_UI32        flags,
    00078                  AP4_ByteStream& stream);
    00079
    00080     // members
    00081     AP4_Array<AP4_SttsTableEntry> m_Entries;
    00082     struct {
    00083         AP4_Ordinal   entry_index;
    00084         AP4_Ordinal   sample;
    00085         AP4_TimeStamp dts;
    00086     } m_LookupCache;
    00087 };
    00088
    00089 #endif // _AP4_STTS_ATOM_H_