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/***************************************************************************
copyright : (C) 2005 by Brian Nickel
email : brian.nickel@gmail.com
***************************************************************************/
/***************************************************************************
* This library is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Lesser General Public License version *
* 2.1 as published by the Free Software Foundation. *
* *
* This library 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 *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this library; if not, write to the Free Software *
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
* USA *
***************************************************************************/
using System.Collections;
using System;
namespace TagLib.Asf
{
public class HeaderObject : Object
{
//////////////////////////////////////////////////////////////////////////
// private properties
//////////////////////////////////////////////////////////////////////////
private ByteVector reserved;
private ArrayList children;
//////////////////////////////////////////////////////////////////////////
// public methods
//////////////////////////////////////////////////////////////////////////
public HeaderObject (Asf.File file, long position) : base (file, position)
{
if (!Guid.Equals (Asf.Guid.AsfHeaderObject))
throw new System.Exception ("Object GUID incorrect.");
children = new ArrayList ();
uint child_count = file.ReadDWord ();
reserved = file.ReadBlock (2);
children.AddRange (file.ReadObjects (child_count, file.Tell));
}
public override ByteVector Render ()
{
ByteVector output = new ByteVector ();
uint child_count = 0;
foreach (Object child in children)
if (child.Guid != Asf.Guid.AsfPaddingObject)
{
output += child.Render ();
child_count ++;
}
int size_diff = (int) (output.Count + 30 - OriginalSize);
if (size_diff != 0)
{
PaddingObject obj = new PaddingObject ((uint) (size_diff > 0 ? 4096 : - size_diff));
output += obj.Render ();
child_count ++;
}
return Render (RenderDWord (child_count) + reserved + output);
}
public void AddObject (Object obj)
{
children.Add (obj);
}
public void AddUniqueObject (Object obj)
{
for (int i = 0; i < children.Count; i ++)
if (((Object) children [i]).Guid == obj.Guid)
{
children [i] = obj;
return;
}
children.Add (obj);
}
//////////////////////////////////////////////////////////////////////////
// public properties
//////////////////////////////////////////////////////////////////////////
public byte [] Reserved {get {return reserved.Data;}}
public Object [] Children {get {return (Object []) children.ToArray (typeof (Object));}}
}
}
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