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/***************************************************************************
copyright : (C) 2005 by Brian Nickel
email : brian.nickel@gmail.com
based on :
***************************************************************************/
/***************************************************************************
* 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
{
[SupportedMimeType("taglib/wma", "wma")]
[SupportedMimeType("taglib/asf", "asf")]
[SupportedMimeType("audio/x-ms-wma")]
[SupportedMimeType("video/x-ms-asf")]
public class File : TagLib.File
{
//////////////////////////////////////////////////////////////////////////
// private properties
//////////////////////////////////////////////////////////////////////////
private Asf.Tag asf_tag;
private Properties properties;
//////////////////////////////////////////////////////////////////////////
// public methods
//////////////////////////////////////////////////////////////////////////
public File (string file, Properties.ReadStyle properties_style) : base (file)
{
asf_tag = null;
properties = null;
try {Mode = AccessMode.Read;}
catch {return;}
Read (properties_style);
Mode = AccessMode.Closed;
}
public File (string file) : this (file, Properties.ReadStyle.Average)
{
}
public override void Save ()
{
if(IsReadOnly) {
throw new ReadOnlyException();
}
Mode = AccessMode.Write;
HeaderObject header = new HeaderObject (this, 0);
header.AddUniqueObject (asf_tag.ContentDescriptionObject);
header.AddUniqueObject (asf_tag.ExtendedContentDescriptionObject);
Insert (header.Render (), 0, header.OriginalSize);
Mode = AccessMode.Closed;
}
public override TagLib.Tag GetTag (TagTypes type, bool create)
{
if (type == TagTypes.Asf)
return asf_tag;
return null;
}
public short ReadWord ()
{
ByteVector v = ReadBlock (2);
return v.ToShort (false);
}
public uint ReadDWord ()
{
ByteVector v = ReadBlock (4);
return v.ToUInt (false);
}
public long ReadQWord ()
{
ByteVector v = ReadBlock (8);
return v.ToLong (false);
}
public Guid ReadGuid ()
{
ByteVector v = ReadBlock (16);
return new Guid (v);
}
public string ReadUnicode (int length)
{
ByteVector data = ReadBlock (length);
string output = data.ToString (StringType.UTF16LE);
int i = output.IndexOf ('\0');
return (i >= 0) ? output.Substring (0, i) : output;
}
public Object [] ReadObjects (uint count, long position)
{
ArrayList l = new ArrayList ();
for (int i = 0; i < (int) count; i ++)
{
Seek (position);
Guid id = ReadGuid ();
Object obj;
if (id.Equals (Guid.AsfFilePropertiesObject))
obj = new FilePropertiesObject (this, position);
else if (id.Equals (Guid.AsfStreamPropertiesObject))
obj = new StreamPropertiesObject (this, position);
else if (id.Equals (Guid.AsfContentDescriptionObject))
obj = new ContentDescriptionObject (this, position);
else if (id.Equals (Guid.AsfExtendedContentDescriptionObject))
obj = new ExtendedContentDescriptionObject (this, position);
else if (id.Equals (Guid.AsfPaddingObject))
obj = new PaddingObject (this, position);
else
obj = new UnknownObject (this, position);
l.Add (obj);
position += obj.OriginalSize;
}
return (Object []) l.ToArray (typeof (Object));
}
//////////////////////////////////////////////////////////////////////////
// public properties
//////////////////////////////////////////////////////////////////////////
public override TagLib.Tag Tag {get {return asf_tag;}}
public override TagLib.AudioProperties AudioProperties {get {return properties;}}
//////////////////////////////////////////////////////////////////////////
// private methods
//////////////////////////////////////////////////////////////////////////
private void Read (Properties.ReadStyle properties_style)
{
HeaderObject header = new HeaderObject (this, 0);
asf_tag = new Asf.Tag (header);
if(properties_style != Properties.ReadStyle.None)
properties = new Properties (header, properties_style);
}
}
}
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