Ap4TkhdAtom.h
Go to the documentation of this file.00001 /***************************************************************** 00002 | 00003 | AP4 - tkhd Atoms 00004 | 00005 | Copyright 2002-2008 Axiomatic Systems, LLC 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_TKHD_ATOM_H_ 00030 #define _AP4_TKHD_ATOM_H_ 00031 00032 /*---------------------------------------------------------------------- 00033 | includes 00034 +---------------------------------------------------------------------*/ 00035 #include "Ap4Atom.h" 00036 00037 /*---------------------------------------------------------------------- 00038 | constants 00039 +---------------------------------------------------------------------*/ 00040 const int AP4_TKHD_FLAG_TRACK_ENABLED = 1; 00041 const int AP4_TKHD_FLAG_TRACK_IN_MOVIE = 2; 00042 const int AP4_TKHD_FLAG_TRACK_IN_PREVIEW = 4; 00043 00044 const int AP4_TKHD_FLAG_DEFAULTS = 7; 00045 00046 /*---------------------------------------------------------------------- 00047 | AP4_TkhdAtom 00048 +---------------------------------------------------------------------*/ 00049 class AP4_TkhdAtom : public AP4_Atom 00050 { 00051 public: 00052 AP4_IMPLEMENT_DYNAMIC_CAST_D(AP4_TkhdAtom, AP4_Atom) 00053 00054 // class methods 00055 static AP4_TkhdAtom* Create(AP4_Size size, AP4_ByteStream& stream); 00056 00057 // methods 00058 AP4_TkhdAtom(AP4_UI32 creation_time, 00059 AP4_UI32 modification_time, 00060 AP4_UI32 track_id, 00061 AP4_UI64 duration, 00062 AP4_UI16 volume, 00063 AP4_UI32 width, 00064 AP4_UI32 height); 00065 virtual AP4_Result InspectFields(AP4_AtomInspector& inspector); 00066 virtual AP4_Result WriteFields(AP4_ByteStream& stream); 00067 00068 AP4_UI64 GetDuration() { return m_Duration; } 00069 void SetDuration(AP4_UI64 duration) { m_Duration = duration; } 00070 AP4_UI32 GetTrackId() { return m_TrackId; } 00071 void SetTrackId(AP4_UI32 track_id) { m_TrackId = track_id; } 00072 00073 void GetTranslation(float& x, float& y) { 00074 x = (float)(*(int*)&m_Matrix[6]) / 65536; 00075 y = (float)(*(int*)&m_Matrix[7]) / 65536; 00076 } 00077 00078 AP4_UI32 GetWidth() { return m_Width; } 00079 void SetWidth(AP4_UI32 width) { m_Width = width; } 00080 AP4_UI32 GetHeight() { return m_Height; } 00081 void SetHeight(AP4_UI32 height) { m_Height = height; } 00082 00083 private: 00084 // methods 00085 AP4_TkhdAtom(AP4_UI32 size, 00086 AP4_UI32 version, 00087 AP4_UI32 flags, 00088 AP4_ByteStream& stream); 00089 00090 // members 00091 AP4_UI64 m_CreationTime; 00092 AP4_UI64 m_ModificationTime; 00093 AP4_UI32 m_TrackId; 00094 AP4_UI32 m_Reserved1; 00095 AP4_UI64 m_Duration; 00096 AP4_UI32 m_Reserved2[2]; 00097 AP4_UI16 m_Layer; 00098 AP4_UI16 m_AlternateGroup; 00099 AP4_UI16 m_Volume; 00100 AP4_UI16 m_Reserved3; 00101 AP4_UI32 m_Matrix[9]; 00102 AP4_UI32 m_Width; 00103 AP4_UI32 m_Height; 00104 }; 00105 00106 #endif // _AP4_TKHD_ATOM_H_
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