corrade-vassal – Rev 1
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/// <summary>**************************************************************************
///
/// $Id: ChannelDefinitionBox.java,v 1.1 2002/07/25 14:50:46 grosbois Exp $
///
/// Copyright Eastman Kodak Company, 343 State Street, Rochester, NY 14650
/// $Date $
/// ***************************************************************************
/// </summary>
using System;
using ColorSpaceException = CSJ2K.Color.ColorSpaceException;
using ICCProfile = CSJ2K.Icc.ICCProfile;
using ParameterList = CSJ2K.j2k.util.ParameterList;
using RandomAccessIO = CSJ2K.j2k.io.RandomAccessIO;
namespace CSJ2K.Color.Boxes
{
/// <summary> This class maps the components in the codestream
/// to channels in the image. It models the Component
/// Mapping box in the JP2 header.
///
/// </summary>
/// <version> 1.0
/// </version>
/// <author> Bruce A. Kern
/// </author>
public sealed class ChannelDefinitionBox:JP2Box
{
public int NDefs
{
/* Return the number of channel definitions. */
get
{
return ndefs;
}
}
private int ndefs;
private System.Collections.Hashtable definitions = System.Collections.Hashtable.Synchronized(new System.Collections.Hashtable());
/// <summary> Construct a ChannelDefinitionBox from an input image.</summary>
/// <param name="in">RandomAccessIO jp2 image
/// </param>
/// <param name="boxStart">offset to the start of the box in the image
/// </param>
/// <exception cref="IOException,">ColorSpaceException
/// </exception>
public ChannelDefinitionBox(RandomAccessIO in_Renamed, int boxStart):base(in_Renamed, boxStart)
{
readBox();
}
/// <summary>Analyze the box content. </summary>
private void readBox()
{
byte[] bfr = new byte[8];
in_Renamed.seek(dataStart);
in_Renamed.readFully(bfr, 0, 2);
ndefs = ICCProfile.getShort(bfr, 0) & 0x0000ffff;
int offset = dataStart + 2;
in_Renamed.seek(offset);
for (int i = 0; i < ndefs; ++i)
{
in_Renamed.readFully(bfr, 0, 6);
int channel = ICCProfile.getShort(bfr, 0);
int[] channel_def = new int[3];
channel_def[0] = getCn(bfr);
channel_def[1] = getTyp(bfr);
channel_def[2] = getAsoc(bfr);
definitions[(System.Int32) channel_def[0]] = channel_def;
}
}
/* Return the channel association. */
public int getCn(int asoc)
{
System.Collections.IEnumerator keys = definitions.Keys.GetEnumerator();
//UPGRADE_TODO: Method 'java.util.Enumeration.hasMoreElements' was converted to 'System.Collections.IEnumerator.MoveNext' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javautilEnumerationhasMoreElements'"
while (keys.MoveNext())
{
//UPGRADE_TODO: Method 'java.util.Enumeration.nextElement' was converted to 'System.Collections.IEnumerator.Current' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javautilEnumerationnextElement'"
int[] bfr = (int[]) definitions[keys.Current];
if (asoc == getAsoc(bfr))
return getCn(bfr);
}
return asoc;
}
/* Return the channel type. */
public int getTyp(int channel)
{
int[] bfr = (int[]) definitions[(System.Int32) channel];
return getTyp(bfr);
}
/* Return the associated channel of the association. */
public int getAsoc(int channel)
{
int[] bfr = (int[]) definitions[(System.Int32) channel];
return getAsoc(bfr);
}
/// <summary>Return a suitable String representation of the class instance. </summary>
public override System.String ToString()
{
System.Text.StringBuilder rep = new System.Text.StringBuilder("[ChannelDefinitionBox ").Append(eol).Append(" ");
rep.Append("ndefs= ").Append(System.Convert.ToString(ndefs));
System.Collections.IEnumerator keys = definitions.Keys.GetEnumerator();
//UPGRADE_TODO: Method 'java.util.Enumeration.hasMoreElements' was converted to 'System.Collections.IEnumerator.MoveNext' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javautilEnumerationhasMoreElements'"
while (keys.MoveNext())
{
//UPGRADE_TODO: Method 'java.util.Enumeration.nextElement' was converted to 'System.Collections.IEnumerator.Current' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javautilEnumerationnextElement'"
int[] bfr = (int[]) definitions[keys.Current];
rep.Append(eol).Append(" ").Append("Cn= ").Append(System.Convert.ToString(getCn(bfr))).Append(", ").Append("Typ= ").Append(System.Convert.ToString(getTyp(bfr))).Append(", ").Append("Asoc= ").Append(System.Convert.ToString(getAsoc(bfr)));
}
rep.Append("]");
return rep.ToString();
}
/// <summary>Return the channel from the record.</summary>
private int getCn(byte[] bfr)
{
return ICCProfile.getShort(bfr, 0);
}
/// <summary>Return the channel type from the record.</summary>
private int getTyp(byte[] bfr)
{
return ICCProfile.getShort(bfr, 2);
}
/// <summary>Return the associated channel from the record.</summary>
private int getAsoc(byte[] bfr)
{
return ICCProfile.getShort(bfr, 4);
}
private int getCn(int[] bfr)
{
return bfr[0];
}
private int getTyp(int[] bfr)
{
return bfr[1];
}
private int getAsoc(int[] bfr)
{
return bfr[2];
}
/* end class ChannelDefinitionBox */
static ChannelDefinitionBox()
{
{
type = 0x63646566;
}
}
}
}
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