Bento4 MP4 SDK: Ap4Mpeg2Ts.h Source File

Bento4 MP4 SDK

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Ap4Mpeg2Ts.h

00001 /*****************************************************************
00002 |
00003 |    AP4 - MPEG2 Transport Streams
00004 |
00005 |    Copyright 2002-2009 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_MPEG2_TS_H_
00030 #define _AP4_MPEG2_TS_H_
00031 
00032 /*----------------------------------------------------------------------
00033 |   includes
00034 +---------------------------------------------------------------------*/
00035 #include "Ap4Types.h"
00036 
00037 /*----------------------------------------------------------------------
00038 |   classes
00039 +---------------------------------------------------------------------*/
00040 class AP4_ByteStream;
00041 class AP4_Sample;
00042 class AP4_SampleDescription;
00043 
00044 /*----------------------------------------------------------------------
00045 |   constants
00046 +---------------------------------------------------------------------*/
00047 const AP4_UI16 AP4_MPEG2_TS_DEFAULT_PID_PMT         = 0x100;
00048 const AP4_UI16 AP4_MPEG2_TS_DEFAULT_PID_AUDIO       = 0x101;
00049 const AP4_UI16 AP4_MPEG2_TS_DEFAULT_PID_VIDEO       = 0x102;
00050 const AP4_UI16 AP4_MPEG2_TS_DEFAULT_STREAM_ID_AUDIO = 0xc0;
00051 const AP4_UI16 AP4_MPEG2_TS_DEFAULT_STREAM_ID_VIDEO = 0xe0;
00052 
00053 const AP4_UI08 AP4_MPEG2_STREAM_TYPE_ISO_IEC_13818_7 = 0x0F;
00054 const AP4_UI08 AP4_MPEG2_STREAM_TYPE_AVC             = 0x1B;
00055 
00056 /*----------------------------------------------------------------------
00057 |   AP4_Mpeg2TsWriter
00058 +---------------------------------------------------------------------*/
00066 class AP4_Mpeg2TsWriter
00067 {
00068 public:
00069     // classes
00070     class Stream {
00071     public:
00072         Stream(AP4_UI16 pid) : m_PID(pid), m_ContinuityCounter(0) {}
00073         virtual ~Stream() {}
00074         
00075         AP4_UI16 GetPID() { return m_PID; }
00076         void WritePacketHeader(bool            payload_start, 
00077                                unsigned int&   payload_size,
00078                                bool            with_pcr,
00079                                AP4_UI64        pcr,
00080                                AP4_ByteStream& output);
00081         
00082     private:
00083         unsigned int m_PID;
00084         unsigned int m_ContinuityCounter;
00085     };
00086     
00087     class SampleStream : public Stream {
00088     public:
00089         SampleStream(AP4_UI16 pid, AP4_UI16 stream_id, AP4_UI08 stream_type, AP4_UI32 timescale) :
00090             Stream(pid), 
00091             m_StreamId(stream_id),
00092             m_StreamType(stream_type),
00093             m_TimeScale(timescale) {}
00094         
00095         virtual AP4_Result WritePES(const unsigned char* data, 
00096                                     unsigned int         data_size, 
00097                                     AP4_UI64             dts, 
00098                                     bool                 with_dts, 
00099                                     AP4_UI64             pts, 
00100                                     bool                 with_pcr, 
00101                                     AP4_ByteStream&      output);
00102         virtual AP4_Result WriteSample(AP4_Sample&            sample, 
00103                                        AP4_SampleDescription* sample_description,
00104                                        bool                   with_pcr, 
00105                                        AP4_ByteStream&        output) = 0;
00106         
00107         unsigned int m_StreamId;
00108         AP4_UI08     m_StreamType;
00109         AP4_UI32     m_TimeScale;
00110     };
00111     
00112     // constructor
00113     AP4_Mpeg2TsWriter();
00114     ~AP4_Mpeg2TsWriter();
00115     
00116     Stream* GetPAT() { return m_PAT; }
00117     Stream* GetPMT() { return m_PMT; }
00118     AP4_Result WritePAT(AP4_ByteStream& output);
00119     AP4_Result WritePMT(AP4_ByteStream& output);
00120     AP4_Result SetAudioStream(AP4_UI32 timescale, SampleStream*& stream);
00121     AP4_Result SetVideoStream(AP4_UI32 timescale, SampleStream*& stream);
00122     
00123 private:
00124     Stream*       m_PAT;
00125     Stream*       m_PMT;
00126     SampleStream* m_Audio;
00127     SampleStream* m_Video;
00128 };
00129 
00130 #endif // _AP4_MPEG2_TS_H_
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