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# Ap4EsDescriptor.h

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    00001 /*****************************************************************
    00002 |
    00003 |    AP4 - ES Descriptor
    00004 |
    00005 |    Copyright 2002-2006 Gilles Boccon-Gibod & Julien Boeuf
    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_ES_DESCRIPTOR_H_
    00030 #define _AP4_ES_DESCRIPTOR_H_
    00031
    00032 /*----------------------------------------------------------------------
    00033 |   includes
    00034 +---------------------------------------------------------------------*/
    00035 #include "Ap4List.h"
    00036 #include "Ap4String.h"
    00037 #include "Ap4Descriptor.h"
    00038 #include "Ap4DecoderConfigDescriptor.h"
    00039
    00040 /*----------------------------------------------------------------------
    00041 |   class references
    00042 +---------------------------------------------------------------------*/
    00043 class AP4_ByteStream;
    00044
    00045 /*----------------------------------------------------------------------
    00046 |   constants
    00047 +---------------------------------------------------------------------*/
    00048 const AP4_UI08 AP4_DESCRIPTOR_TAG_ES        = 0x03;
    00049 const AP4_UI08 AP4_DESCRIPTOR_TAG_ES_ID_INC = 0x0E;
    00050 const AP4_UI08 AP4_DESCRIPTOR_TAG_ES_ID_REF = 0x0F;
    00051
    00052 const int AP4_ES_DESCRIPTOR_FLAG_STREAM_DEPENDENCY = 1;
    00053 const int AP4_ES_DESCRIPTOR_FLAG_URL               = 2;
    00054 const int AP4_ES_DESCRIPTOR_FLAG_OCR_STREAM        = 4;
    00055
    00056 /*----------------------------------------------------------------------
    00057 |   AP4_EsDescriptor
    00058 +---------------------------------------------------------------------*/
    00059 class AP4_EsDescriptor : public AP4_Descriptor
    00060 {
    00061  public:
    00062     // methods
    00063     AP4_EsDescriptor(AP4_UI16 es_id);
    00064     AP4_EsDescriptor(AP4_ByteStream& stream,
    00065                      AP4_Size        header_size,
    00066                      AP4_Size        payload_size);
    00067     ~AP4_EsDescriptor();
    00068     virtual AP4_Result AddSubDescriptor(AP4_Descriptor* descriptor);
    00069     virtual AP4_Result WriteFields(AP4_ByteStream& stream);
    00070     virtual AP4_Result Inspect(AP4_AtomInspector& inspector);
    00071     virtual const AP4_DecoderConfigDescriptor* GetDecoderConfigDescriptor() const;
    00072
    00073  private:
    00074     // members
    00075     unsigned short                   m_EsId;
    00076     unsigned short                   m_OcrEsId;
    00077     AP4_Flags                        m_Flags;
    00078     unsigned char                    m_StreamPriority;
    00079     unsigned short                   m_DependsOn;
    00080     AP4_String                       m_Url;
    00081     mutable AP4_List<AP4_Descriptor> m_SubDescriptors;
    00082 };
    00083
    00084 /*----------------------------------------------------------------------
    00085 |   AP4_EsIdIncDescriptor
    00086 +---------------------------------------------------------------------*/
    00087 class AP4_EsIdIncDescriptor : public AP4_Descriptor
    00088 {
    00089  public:
    00090     // methods
    00091     AP4_EsIdIncDescriptor(AP4_UI32 track_id);
    00092     AP4_EsIdIncDescriptor(AP4_ByteStream& stream,
    00093                           AP4_Size        header_size,
    00094                           AP4_Size        payload_size);
    00095     virtual AP4_Result WriteFields(AP4_ByteStream& stream);
    00096     virtual AP4_Result Inspect(AP4_AtomInspector& inspector);
    00097
    00098     // accessors
    00099     AP4_UI32 GetTrackId() const { return m_TrackId; }
    00100
    00101  private:
    00102     // members
    00103     AP4_UI32 m_TrackId;
    00104 };
    00105
    00106 /*----------------------------------------------------------------------
    00107 |   AP4_EsIdRefDescriptor
    00108 +---------------------------------------------------------------------*/
    00109 class AP4_EsIdRefDescriptor : public AP4_Descriptor
    00110 {
    00111  public:
    00112     // methods
    00113     AP4_EsIdRefDescriptor(AP4_UI16 ref_index);
    00114     AP4_EsIdRefDescriptor(AP4_ByteStream& stream,
    00115                           AP4_Size        header_size,
    00116                           AP4_Size        payload_size);
    00117     virtual AP4_Result WriteFields(AP4_ByteStream& stream);
    00118     virtual AP4_Result Inspect(AP4_AtomInspector& inspector);
    00119
    00120     // accessors
    00121     AP4_UI16 GetRefIndex() const { return m_RefIndex; }
    00122
    00123  private:
    00124     // members
    00125     AP4_UI16 m_RefIndex;
    00126 };
    00127
    00128 #endif // _AP4_ES_DESCRIPTOR_H_