Ap4Sample.h
Go to the documentation of this file.00001 /***************************************************************** 00002 | 00003 | AP4 - Sample Objects 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_SAMPLE_H_ 00030 #define _AP4_SAMPLE_H_ 00031 00032 /*---------------------------------------------------------------------- 00033 | includes 00034 +---------------------------------------------------------------------*/ 00035 #include "Ap4Types.h" 00036 00037 /*---------------------------------------------------------------------- 00038 | class references 00039 +---------------------------------------------------------------------*/ 00040 class AP4_ByteStream; 00041 class AP4_DataBuffer; 00042 00043 /*---------------------------------------------------------------------- 00044 | AP4_Sample DO NOT DERIVE FROM THIS CLASS 00045 +---------------------------------------------------------------------*/ 00046 class AP4_Sample 00047 { 00048 public: 00052 AP4_Sample(); 00053 00057 AP4_Sample(const AP4_Sample& other); 00058 00075 AP4_Sample(AP4_ByteStream& data_stream, 00076 AP4_Position offset, 00077 AP4_Size size, 00078 AP4_UI32 duration, 00079 AP4_Ordinal description_index, 00080 AP4_UI64 dts, 00081 AP4_UI32 cts_delta, 00082 bool sync_flag); 00083 00084 ~AP4_Sample(); // not virtual on purpose: do not derive from it 00085 00086 // operators 00087 AP4_Sample& operator=(const AP4_Sample& other); 00088 00089 // methods 00090 AP4_Result ReadData(AP4_DataBuffer& data); 00091 AP4_Result ReadData(AP4_DataBuffer& data, 00092 AP4_Size size, 00093 AP4_Size offset = 0); 00094 00095 // sample properties accessors 00096 AP4_ByteStream* GetDataStream(); 00097 void SetDataStream(AP4_ByteStream& stream); 00098 AP4_Position GetOffset() const { return m_Offset; } 00099 void SetOffset(AP4_Position offset) { m_Offset = offset; } 00100 AP4_Size GetSize() { return m_Size; } 00101 void SetSize(AP4_Size size) { m_Size = size; } 00102 AP4_Ordinal GetDescriptionIndex() const { return m_DescriptionIndex; } 00103 void SetDescriptionIndex(AP4_Ordinal index) { m_DescriptionIndex = index; } 00104 00108 AP4_UI64 GetDts() const { return m_Dts; } 00109 00113 void SetDts(AP4_UI64 dts) { m_Dts = dts; } 00114 00118 AP4_UI64 GetCts() const { return m_Dts+m_CtsDelta; } 00119 00123 void SetCts(AP4_UI64 cts) { m_CtsDelta = (cts > m_Dts) ? (AP4_UI32)(cts-m_Dts) : 0; } 00124 00129 AP4_UI32 GetCtsDelta() const { return m_CtsDelta; } 00130 00135 void SetCtsDelta(AP4_UI32 delta) { m_CtsDelta = (AP4_SI32)delta; } 00136 00140 AP4_UI32 GetDuration() const { return m_Duration; } 00141 00145 void SetDuration(AP4_UI32 duration) { m_Duration = duration; } 00146 00150 bool IsSync() const { return m_IsSync; } 00151 00155 void SetSync(bool is_sync) { m_IsSync = is_sync; } 00156 00160 void Reset(); 00161 00162 protected: 00163 AP4_ByteStream* m_DataStream; 00164 AP4_Position m_Offset; 00165 AP4_Size m_Size; 00166 AP4_UI32 m_Duration; 00167 AP4_Ordinal m_DescriptionIndex; 00168 AP4_UI64 m_Dts; 00169 AP4_SI32 m_CtsDelta; // make this a signed value, because quicktime can use negative offsets 00170 bool m_IsSync; 00171 }; 00172 00173 #endif // _AP4_SAMPLE_H_
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