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|
/*****************************************************************
|
| AP4 - DecoderSpecificInfo Descriptors
|
| Copyright 2002-2008 Axiomatic Systems, LLC
|
|
| This file is part of Bento4/AP4 (MP4 Atom Processing Library).
|
| Unless you have obtained Bento4 under a difference license,
| this version of Bento4 is Bento4|GPL.
| Bento4|GPL is free software; you can redistribute it and/or modify
| it under the terms of the GNU General Public License as published by
| the Free Software Foundation; either version 2, or (at your option)
| any later version.
|
| Bento4|GPL is distributed in the hope that it will be useful,
| but WITHOUT ANY WARRANTY; without even the implied warranty of
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
| GNU General Public License for more details.
|
| You should have received a copy of the GNU General Public License
| along with Bento4|GPL; see the file COPYING. If not, write to the
| Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
| 02111-1307, USA.
|
****************************************************************/
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include "Ap4DecoderSpecificInfoDescriptor.h"
#include "Ap4DescriptorFactory.h"
#include "Ap4Utils.h"
#include "Ap4ByteStream.h"
#include "Ap4Atom.h"
/*----------------------------------------------------------------------
| dynamic cast support
+---------------------------------------------------------------------*/
AP4_DEFINE_DYNAMIC_CAST_ANCHOR(AP4_DecoderSpecificInfoDescriptor)
/*----------------------------------------------------------------------
| AP4_DecoderSpecificInfoDescriptor::AP4_DecoderSpecificInfoDescriptor
+---------------------------------------------------------------------*/
AP4_DecoderSpecificInfoDescriptor::AP4_DecoderSpecificInfoDescriptor(
const AP4_DataBuffer& data) :
AP4_Descriptor(AP4_DESCRIPTOR_TAG_DECODER_SPECIFIC_INFO,
MinHeaderSize(data.GetDataSize()),
data.GetDataSize()),
m_Info(data)
{
}
/*----------------------------------------------------------------------
| AP4_DecoderSpecificInfoDescriptor::AP4_DecoderSpecificInfoDescriptor
+---------------------------------------------------------------------*/
AP4_DecoderSpecificInfoDescriptor::AP4_DecoderSpecificInfoDescriptor(
AP4_ByteStream& stream, AP4_Size header_size, AP4_Size payload_size) :
AP4_Descriptor(AP4_DESCRIPTOR_TAG_DECODER_SPECIFIC_INFO,
header_size, payload_size)
{
m_Info.SetDataSize(payload_size);
stream.Read(m_Info.UseData(), payload_size);
}
/*----------------------------------------------------------------------
| AP4_DecoderSpecificInfoDescriptor::~AP4_DecoderSpecificInfoDescriptor
+---------------------------------------------------------------------*/
AP4_DecoderSpecificInfoDescriptor::~AP4_DecoderSpecificInfoDescriptor()
{
}
/*----------------------------------------------------------------------
| AP4_DecoderSpecificInfoDescriptor::WriteFields
+---------------------------------------------------------------------*/
AP4_Result
AP4_DecoderSpecificInfoDescriptor::WriteFields(AP4_ByteStream& stream)
{
// write the info buffer
if (m_PayloadSize && m_Info.GetDataSize()) {
stream.Write(m_Info.GetData(), m_Info.GetDataSize());
}
return AP4_SUCCESS;
}
/*----------------------------------------------------------------------
| AP4_DecoderSpecificInfoDescriptor::Inspect
+---------------------------------------------------------------------*/
AP4_Result
AP4_DecoderSpecificInfoDescriptor::Inspect(AP4_AtomInspector& inspector)
{
char* info = new char[m_Info.GetDataSize()*3+1];
for (unsigned int i=0; i<m_Info.GetDataSize(); i++) {
AP4_FormatString(&info[i*3], 4, "%02x ", m_Info.UseData()[i]);
}
info[m_Info.GetDataSize()*3] = '\0';
inspector.AddField("DecoderSpecificInfo", info);
delete[] info;
return AP4_SUCCESS;
}
|
