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|
/*****************************************************************
|
| AP4 - UUID Atoms
|
| 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 "Ap4Types.h"
#include "Ap4UuidAtom.h"
#include "Ap4Utils.h"
/*----------------------------------------------------------------------
| AP4_UuidAtom Dynamic Cast Anchor
+---------------------------------------------------------------------*/
AP4_DEFINE_DYNAMIC_CAST_ANCHOR(AP4_UuidAtom)
/*----------------------------------------------------------------------
| AP4_UuidAtom::AP4_UuidAtom
+---------------------------------------------------------------------*/
AP4_UuidAtom::AP4_UuidAtom(AP4_UI64 size, const AP4_UI08* uuid) :
AP4_Atom(AP4_ATOM_TYPE_UUID, size)
{
AP4_CopyMemory(m_Uuid, uuid, 16);
}
/*----------------------------------------------------------------------
| AP4_UuidAtom::AP4_UuidAtom
+---------------------------------------------------------------------*/
AP4_UuidAtom::AP4_UuidAtom(AP4_UI64 size, const AP4_UI08* uuid, AP4_UI08 version, AP4_UI32 flags) :
AP4_Atom(AP4_ATOM_TYPE_UUID, size, false, version, flags)
{
AP4_CopyMemory(m_Uuid, uuid, 16);
}
/*----------------------------------------------------------------------
| AP4_UuidAtom::AP4_UuidAtom
+---------------------------------------------------------------------*/
AP4_UuidAtom::AP4_UuidAtom(AP4_UI64 size, bool is_full, AP4_ByteStream& stream) :
AP4_Atom(AP4_ATOM_TYPE_UUID, size)
{
if (is_full) {
m_IsFull = true;
ReadFullHeader(stream, m_Version, m_Flags);
}
}
/*----------------------------------------------------------------------
| AP4_UuidAtom::GetHeaderSize
+---------------------------------------------------------------------*/
AP4_Size
AP4_UuidAtom::GetHeaderSize() const
{
return (m_IsFull ? AP4_FULL_UUID_ATOM_HEADER_SIZE : AP4_UUID_ATOM_HEADER_SIZE)+(m_Size32==1?8:0);
}
/*----------------------------------------------------------------------
| AP4_UuidAtom::WriteHeader
+---------------------------------------------------------------------*/
AP4_Result
AP4_UuidAtom::WriteHeader(AP4_ByteStream& stream)
{
AP4_Result result;
// write the size
result = stream.WriteUI32(m_Size32);
if (AP4_FAILED(result)) return result;
// write the type
result = stream.WriteUI32(m_Type);
if (AP4_FAILED(result)) return result;
// handle 64-bit sizes
if (m_Size32 == 1) {
result = stream.WriteUI64(m_Size64);
if (AP4_FAILED(result)) return result;
}
// write the extended type
result = stream.Write(m_Uuid, 16);
if (AP4_FAILED(result)) return result;
// for full atoms, write version and flags
if (m_IsFull) {
result = stream.WriteUI08((AP4_UI08)m_Version);
if (AP4_FAILED(result)) return result;
result = stream.WriteUI24(m_Flags);
if (AP4_FAILED(result)) return result;
}
return AP4_SUCCESS;
}
/*----------------------------------------------------------------------
| AP4_UuidAtom::InspectHeader
+---------------------------------------------------------------------*/
AP4_Result
AP4_UuidAtom::InspectHeader(AP4_AtomInspector& inspector)
{
char uuid[37];
uuid[36] = '\0';
char* dst = uuid;
for (unsigned int i=0; i<16; i++) {
*dst++ = AP4_NibbleHex(m_Uuid[i]>>4);
*dst++ = AP4_NibbleHex(m_Uuid[i]&0x0F);
if (i == 5 || i == 7 || i == 9 || i == 11) *dst++ = '-';
}
inspector.StartAtom(uuid,
m_Version,
m_Flags,
GetHeaderSize(),
GetSize());
return AP4_SUCCESS;
}
/*----------------------------------------------------------------------
| AP4_UnknownUuidAtom Dynamic Cast Anchor
+---------------------------------------------------------------------*/
AP4_DEFINE_DYNAMIC_CAST_ANCHOR(AP4_UnknownUuidAtom)
/*----------------------------------------------------------------------
| AP4_UnknownUuidAtom::AP4_UnknownUuidAtom
+---------------------------------------------------------------------*/
AP4_UnknownUuidAtom::AP4_UnknownUuidAtom(AP4_UI64 size, AP4_ByteStream& stream) :
AP4_UuidAtom(size, false, stream)
{
// store the data
m_Data.SetDataSize((AP4_Size)size-GetHeaderSize());
stream.Read(m_Data.UseData(), m_Data.GetDataSize());
}
/*----------------------------------------------------------------------
| AP4_UnknownUuidAtom::AP4_UnknownUuidAtom
+---------------------------------------------------------------------*/
AP4_UnknownUuidAtom::AP4_UnknownUuidAtom(AP4_UI64 size, const AP4_UI08* uuid, AP4_ByteStream& stream) :
AP4_UuidAtom(size, uuid)
{
// store the data
m_Data.SetDataSize((AP4_Size)size-GetHeaderSize());
stream.Read(m_Data.UseData(), m_Data.GetDataSize());
}
/*----------------------------------------------------------------------
| AP4_UnknownUuidAtom::WriteFields
+---------------------------------------------------------------------*/
AP4_Result
AP4_UnknownUuidAtom::WriteFields(AP4_ByteStream& stream)
{
// write the data
return stream.Write(m_Data.GetData(), m_Data.GetDataSize());
}
|
