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|
/*****************************************************************
|
| AP4 - tkhd 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_TKHD_ATOM_H_
#define _AP4_TKHD_ATOM_H_
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include "Ap4Atom.h"
#include "Ap4Utils.h"
/*----------------------------------------------------------------------
| constants
+---------------------------------------------------------------------*/
const int AP4_TKHD_FLAG_TRACK_ENABLED = 1;
const int AP4_TKHD_FLAG_TRACK_IN_MOVIE = 2;
const int AP4_TKHD_FLAG_TRACK_IN_PREVIEW = 4;
const int AP4_TKHD_FLAG_DEFAULTS = 7;
/*----------------------------------------------------------------------
| AP4_TkhdAtom
+---------------------------------------------------------------------*/
class AP4_TkhdAtom : public AP4_Atom
{
public:
AP4_IMPLEMENT_DYNAMIC_CAST_D(AP4_TkhdAtom, AP4_Atom)
// class methods
static AP4_TkhdAtom* Create(AP4_Size size, AP4_ByteStream& stream);
// methods
AP4_TkhdAtom(AP4_UI32 creation_time,
AP4_UI32 modification_time,
AP4_UI32 track_id,
AP4_UI64 duration,
AP4_UI16 volume,
AP4_UI32 width,
AP4_UI32 height,
AP4_UI16 layer = 0,
AP4_UI16 alternate_group = 0,
const AP4_SI32* matrix = NULL);
virtual AP4_Result InspectFields(AP4_AtomInspector& inspector);
virtual AP4_Result WriteFields(AP4_ByteStream& stream);
AP4_UI64 GetCreationTime() const { return m_CreationTime; }
void SetCreationTime(AP4_UI64 creation_time) { m_CreationTime = creation_time; }
AP4_UI64 GetModificationTime() const { return m_ModificationTime; }
void SetModificationTime(AP4_UI64 modification_time) { m_ModificationTime = modification_time; }
AP4_UI32 GetTrackId() const { return m_TrackId; }
void SetTrackId(AP4_UI32 track_id) { m_TrackId = track_id; }
AP4_UI64 GetDuration() const { return m_Duration; }
void SetDuration(AP4_UI64 duration) { m_Duration = duration; }
AP4_UI16 GetLayer() const { return m_Layer; }
void SetLayer(AP4_UI16 layer) { m_Layer = layer; }
AP4_UI16 GetAlternateGroup() const { return m_AlternateGroup; }
void SetAlternateGroup(AP4_UI16 group) { m_AlternateGroup = group; }
AP4_UI16 GetVolume() const { return m_Volume; }
void SetVolume(AP4_UI16 volume) { m_Volume = volume; }
AP4_UI32 GetWidth() const { return m_Width; }
void SetWidth(AP4_UI32 width) { m_Width = width; }
AP4_UI32 GetHeight() const { return m_Height; }
void SetHeight(AP4_UI32 height) { m_Height = height; }
const AP4_SI32* GetMatrix() const { return m_Matrix; }
void SetMatrix(const AP4_SI32* matrix) { AP4_CopyMemory(m_Matrix, matrix, 9*sizeof(m_Matrix[0])); }
void GetTranslation(float& x, float& y) {
x = (float)(*(int*)&m_Matrix[6]) / 65536;
y = (float)(*(int*)&m_Matrix[7]) / 65536;
}
private:
// methods
AP4_TkhdAtom(AP4_UI32 size,
AP4_UI08 version,
AP4_UI32 flags,
AP4_ByteStream& stream);
// members
AP4_UI64 m_CreationTime;
AP4_UI64 m_ModificationTime;
AP4_UI32 m_TrackId;
AP4_UI32 m_Reserved1;
AP4_UI64 m_Duration;
AP4_UI32 m_Reserved2[2];
AP4_UI16 m_Layer;
AP4_UI16 m_AlternateGroup;
AP4_UI16 m_Volume;
AP4_UI16 m_Reserved3;
AP4_SI32 m_Matrix[9];
AP4_UI32 m_Width;
AP4_UI32 m_Height;
};
#endif // _AP4_TKHD_ATOM_H_
|
