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https://github.com/axiomatic-systems/Bento4.git
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93 lines
3.1 KiB
C++
93 lines
3.1 KiB
C++
/*****************************************************************
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| AP4 - sdp Atoms
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| Copyright 2002-2008 Axiomatic Systems, LLC
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| This file is part of Bento4/AP4 (MP4 Atom Processing Library).
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| Unless you have obtained Bento4 under a difference license,
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| this version of Bento4 is Bento4|GPL.
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| Bento4|GPL is free software; you can redistribute it and/or modify
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| it under the terms of the GNU General Public License as published by
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| the Free Software Foundation; either version 2, or (at your option)
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| any later version.
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| Bento4|GPL is distributed in the hope that it will be useful,
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| but WITHOUT ANY WARRANTY; without even the implied warranty of
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| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| GNU General Public License for more details.
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| You should have received a copy of the GNU General Public License
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| along with Bento4|GPL; see the file COPYING. If not, write to the
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| Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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| 02111-1307, USA.
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****************************************************************/
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/*----------------------------------------------------------------------
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| includes
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+---------------------------------------------------------------------*/
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#include "Ap4RtpAtom.h"
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#include "Ap4AtomFactory.h"
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#include "Ap4Utils.h"
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/*----------------------------------------------------------------------
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| AP4_RtpAtom::AP4_RtpAtom
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+---------------------------------------------------------------------*/
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AP4_RtpAtom::AP4_RtpAtom(AP4_UI32 size, AP4_ByteStream& stream) :
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AP4_Atom(AP4_ATOM_TYPE_RTP_, size)
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{
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// desc format
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stream.ReadUI32(m_DescriptionFormat);
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// sdptext
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int str_size = size-(AP4_ATOM_HEADER_SIZE+4);
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if (str_size) {
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char* str = new char[str_size+1];
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stream.Read(str, str_size);
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str[str_size] = '\0'; // force null-termination
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m_SdpText = str;
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delete[] str;
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}
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}
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/*----------------------------------------------------------------------
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| AP4_RtpAtom::WriteFields
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+---------------------------------------------------------------------*/
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AP4_Result
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AP4_RtpAtom::WriteFields(AP4_ByteStream& stream)
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{
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AP4_Result result;
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// description format
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result = stream.WriteUI32(m_DescriptionFormat);
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if (AP4_FAILED(result)) return result;
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// sdp text
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result = stream.Write(m_SdpText.GetChars(), m_SdpText.GetLength());
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if (AP4_FAILED(result)) return result;
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// pad with zeros if necessary
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AP4_Size padding = m_Size32-(AP4_ATOM_HEADER_SIZE+4+m_SdpText.GetLength());
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while (padding--) stream.WriteUI08(0);
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return AP4_SUCCESS;
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}
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/*----------------------------------------------------------------------
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| AP4_RtpAtom::InspectFields
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+---------------------------------------------------------------------*/
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AP4_Result
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AP4_RtpAtom::InspectFields(AP4_AtomInspector& inspector)
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{
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char format_string[5];
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AP4_FormatFourChars(format_string, m_DescriptionFormat);
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inspector.AddField("description_format", format_string);
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inspector.AddField("sdp_text", m_SdpText.GetChars());
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return AP4_SUCCESS;
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}
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