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|
/*****************************************************************
|
| AP4 - mdhd Atoms
|
| Copyright 2002-2008 Axiomatic Systems, LLC
|
|
| This file is part of Bento4/AP4 (MP4 Atom Processing Library).
|
| Unless you have obtained Bento4 under a difference license,
| this version of Bento4 is Bento4|GPL.
| Bento4|GPL is free software; you can redistribute it and/or modify
| it under the terms of the GNU General Public License as published by
| the Free Software Foundation; either version 2, or (at your option)
| any later version.
|
| Bento4|GPL is distributed in the hope that it will be useful,
| but WITHOUT ANY WARRANTY; without even the implied warranty of
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
| GNU General Public License for more details.
|
| You should have received a copy of the GNU General Public License
| along with Bento4|GPL; see the file COPYING. If not, write to the
| Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
| 02111-1307, USA.
|
****************************************************************/
#ifndef _AP4_MDHD_ATOM_H_
#define _AP4_MDHD_ATOM_H_
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include "Ap4Atom.h"
#include "Ap4String.h"
/*----------------------------------------------------------------------
| constants
+---------------------------------------------------------------------*/
const AP4_UI32 AP4_MDHD_DEFAULT_GENERIC_TIMESCALE = 1000;
const AP4_UI32 AP4_MDHD_DEFAULT_VIDEO_TIMESCALE = 90000;
/*----------------------------------------------------------------------
| AP4_MdhdAtom
+---------------------------------------------------------------------*/
class AP4_MdhdAtom : public AP4_Atom
{
public:
AP4_IMPLEMENT_DYNAMIC_CAST_D(AP4_MdhdAtom, AP4_Atom)
// class methods
static AP4_MdhdAtom* Create(AP4_Size size, AP4_ByteStream& stream);
// methods
AP4_MdhdAtom(AP4_UI32 creation_time,
AP4_UI32 modification_time,
AP4_UI32 time_scale,
AP4_UI64 duration,
const char* language);
virtual AP4_Result InspectFields(AP4_AtomInspector& inspector);
virtual AP4_Result WriteFields(AP4_ByteStream& stream);
AP4_UI32 GetDurationMs();
AP4_UI64 GetDuration() { return m_Duration; }
void SetDuration(AP4_UI64 duration) { m_Duration = duration; }
AP4_UI32 GetTimeScale() { return m_TimeScale; }
void SetTimeScale(AP4_UI32 timescale) { m_TimeScale = timescale; }
const AP4_String& GetLanguage() { return m_Language; }
private:
// methods
AP4_MdhdAtom(AP4_UI32 size,
AP4_UI08 version,
AP4_UI32 flags,
AP4_ByteStream& stream);
// members
AP4_UI64 m_CreationTime;
AP4_UI64 m_ModificationTime;
AP4_UI32 m_TimeScale;
AP4_UI64 m_Duration;
AP4_String m_Language;
};
#endif // _AP4_MDHD_ATOM_H_
|
