mirror of
https://github.com/axiomatic-systems/Bento4.git
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130 lines
4.5 KiB
C++
130 lines
4.5 KiB
C++
/*****************************************************************
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| AP4 - 8bdl Atoms
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| Copyright 2002-2009 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 "Ap48bdlAtom.h"
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#include "Ap4Utils.h"
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/*----------------------------------------------------------------------
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| dynamic cast support
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+---------------------------------------------------------------------*/
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AP4_DEFINE_DYNAMIC_CAST_ANCHOR(AP4_8bdlAtom)
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/*----------------------------------------------------------------------
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| AP4_8bdlAtom::AP4_8bdlAtom
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+---------------------------------------------------------------------*/
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AP4_8bdlAtom::AP4_8bdlAtom(AP4_UI32 encoding,
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AP4_UI32 encoding_version,
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const AP4_Byte* data,
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AP4_Size data_size) :
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AP4_Atom(AP4_ATOM_TYPE_8BDL, (AP4_UI32)(AP4_ATOM_HEADER_SIZE+8+data_size)),
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m_Encoding(encoding),
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m_EncodingVersion(encoding_version),
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m_BundleData(data, data_size)
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{
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}
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/*----------------------------------------------------------------------
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| AP4_8bdlAtom::Create
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+---------------------------------------------------------------------*/
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AP4_8bdlAtom*
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AP4_8bdlAtom::Create(AP4_Size size, AP4_ByteStream& stream)
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{
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// make sure we have enough data
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if (size < AP4_ATOM_HEADER_SIZE+8) {
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return NULL;
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} else {
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return new AP4_8bdlAtom(size, stream);
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}
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}
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/*----------------------------------------------------------------------
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| AP4_8bdlAtom::AP4_8bdlAtom
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+---------------------------------------------------------------------*/
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AP4_8bdlAtom::AP4_8bdlAtom(AP4_Size size,
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AP4_ByteStream& stream) :
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AP4_Atom(AP4_ATOM_TYPE_8BDL, (AP4_UI32)(size)),
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m_Encoding(AP4_8BDL_XML_DATA_ENCODING),
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m_EncodingVersion(0),
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m_BundleData(size-AP4_ATOM_HEADER_SIZE-8)
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{
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stream.ReadUI32(m_Encoding);
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stream.ReadUI32(m_EncodingVersion);
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m_BundleData.SetDataSize(m_BundleData.GetBufferSize());
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stream.Read(m_BundleData.UseData(), m_BundleData.GetDataSize());
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}
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/*----------------------------------------------------------------------
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| AP4_8bdlAtom::WriteFields
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+---------------------------------------------------------------------*/
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AP4_Result
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AP4_8bdlAtom::WriteFields(AP4_ByteStream& stream)
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{
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AP4_Result result;
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// encoding
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result = stream.WriteUI32(m_Encoding);
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if (AP4_FAILED(result)) return result;
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// encoding version
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result = stream.WriteUI32(m_EncodingVersion);
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if (AP4_FAILED(result)) return result;
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// bundle_data
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result = stream.Write(m_BundleData.GetData(), m_BundleData.GetDataSize());
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if (AP4_FAILED(result)) return result;
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return result;
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}
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/*----------------------------------------------------------------------
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| AP4_8bdlAtom::InspectFields
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+---------------------------------------------------------------------*/
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AP4_Result
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AP4_8bdlAtom::InspectFields(AP4_AtomInspector& inspector)
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{
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char enc[5];
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AP4_FormatFourChars(enc, m_Encoding);
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inspector.AddField("encoding", enc);
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inspector.AddField("encoding_version", m_EncodingVersion);
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if (m_Encoding == AP4_8BDL_XML_DATA_ENCODING) {
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// we, in fact have an xml string
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AP4_String xml((const char*)m_BundleData.GetData(), m_BundleData.GetDataSize());
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inspector.AddField("bundle_data", xml.GetChars());
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} else {
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inspector.AddField("bundle_data", m_BundleData.GetData(), m_BundleData.GetDataSize());
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}
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return AP4_SUCCESS;
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}
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