corrade-vassal – Rev 1
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/// <summary>**************************************************************************
///
/// $Id: SYccColorSpaceMapper.java,v 1.1 2002/07/25 14:52:01 grosbois Exp $
///
/// Copyright Eastman Kodak Company, 343 State Street, Rochester, NY 14650
/// $Date $
/// ***************************************************************************
/// </summary>
using System;
using ParameterList = CSJ2K.j2k.util.ParameterList;
using BlkImgDataSrc = CSJ2K.j2k.image.BlkImgDataSrc;
using DataBlk = CSJ2K.j2k.image.DataBlk;
using DataBlkInt = CSJ2K.j2k.image.DataBlkInt;
using DataBlkFloat = CSJ2K.j2k.image.DataBlkFloat;
using ImgDataAdapter = CSJ2K.j2k.image.ImgDataAdapter;
using FacilityManager = CSJ2K.j2k.util.FacilityManager;
using MsgLogger = CSJ2K.j2k.util.MsgLogger;
namespace CSJ2K.Color
{
/// <summary> This decodes maps which are defined in the sYCC
/// colorspace into the sRGB colorspadce.
///
/// </summary>
/// <seealso cref="jj2000.j2k.colorspace.ColorSpace">
/// </seealso>
/// <version> 1.0
/// </version>
/// <author> Bruce A. Kern
/// </author>
public class SYccColorSpaceMapper:ColorSpaceMapper
{
/// <summary>Matrix component for ycc transform. </summary>
/* sYCC colorspace matrix */
protected internal static float Matrix00 = 1;
/// <summary>Matrix component for ycc transform. </summary>
protected internal static float Matrix01 = 0;
/// <summary>Matrix component for ycc transform. </summary>
protected internal static float Matrix02 = (float) 1.402;
/// <summary>Matrix component for ycc transform. </summary>
protected internal static float Matrix10 = 1;
/// <summary>Matrix component for ycc transform. </summary>
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
protected internal static float Matrix11 = (float) (- 0.34413);
/// <summary>Matrix component for ycc transform. </summary>
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
protected internal static float Matrix12 = (float) (- 0.71414);
/// <summary>Matrix component for ycc transform. </summary>
protected internal static float Matrix20 = 1;
/// <summary>Matrix component for ycc transform. </summary>
protected internal static float Matrix21 = (float) 1.772;
/// <summary>Matrix component for ycc transform. </summary>
protected internal static float Matrix22 = 0;
/// <summary> Factory method for creating instances of this class.</summary>
/// <param name="src">-- source of image data
/// </param>
/// <param name="csMap">-- provides colorspace info
/// </param>
/// <returns> SYccColorSpaceMapper instance
/// </returns>
public static new BlkImgDataSrc createInstance(BlkImgDataSrc src, ColorSpace csMap)
{
return new SYccColorSpaceMapper(src, csMap);
}
/// <summary> Ctor which creates an ICCProfile for the image and initializes
/// all data objects (input, working, and output).
///
/// </summary>
/// <param name="src">-- Source of image data
/// </param>
/// <param name="csm">-- provides colorspace info
/// </param>
protected internal SYccColorSpaceMapper(BlkImgDataSrc src, ColorSpace csMap):base(src, csMap)
{
initialize();
/* end SYccColorSpaceMapper ctor */
}
/// <summary>General utility used by ctors </summary>
private void initialize()
{
if (ncomps != 1 && ncomps != 3)
{
System.String msg = "SYccColorSpaceMapper: ycc transformation _not_ applied to " + ncomps + " component image";
FacilityManager.getMsgLogger().printmsg(CSJ2K.j2k.util.MsgLogger_Fields.ERROR, msg);
throw new ColorSpaceException(msg);
}
}
/// <summary> Returns, in the blk argument, a block of image data containing the
/// specifed rectangular area, in the specified component. The data is
/// returned, as a copy of the internal data, therefore the returned data
/// can be modified "in place".
///
/// <P>The rectangular area to return is specified by the 'ulx', 'uly', 'w'
/// and 'h' members of the 'blk' argument, relative to the current
/// tile. These members are not modified by this method. The 'offset' of
/// the returned data is 0, and the 'scanw' is the same as the block's
/// width. See the 'DataBlk' class.
///
/// <P>If the data array in 'blk' is 'null', then a new one is created. If
/// the data array is not 'null' then it is reused, and it must be large
/// enough to contain the block's data. Otherwise an 'ArrayStoreException'
/// or an 'IndexOutOfBoundsException' is thrown by the Java system.
///
/// <P>The returned data has its 'progressive' attribute set to that of the
/// input data.
///
/// </summary>
/// <param name="blk">Its coordinates and dimensions specify the area to
/// return. If it contains a non-null data array, then it must have the
/// correct dimensions. If it contains a null data array a new one is
/// created. The fields in this object are modified to return the data.
///
/// </param>
/// <param name="c">The index of the component from which to get the data. Only 0
/// and 3 are valid.
///
/// </param>
/// <returns> The requested DataBlk
/// </returns>
/// <seealso cref="getInternCompData">
///
/// </seealso>
public override DataBlk getCompData(DataBlk outblk, int c)
{
int type = outblk.DataType;
int i; // j removed
// Calculate all components:
for (i = 0; i < ncomps; ++i)
{
// Set up the working DataBlk geometry.
copyGeometry(workInt[i], outblk);
copyGeometry(workFloat[i], outblk);
copyGeometry(inInt[i], outblk);
copyGeometry(inFloat[i], outblk);
// Request data from the source.
inInt[i] = (DataBlkInt) src.getInternCompData(inInt[i], i);
}
if (type == DataBlk.TYPE_INT)
{
if (ncomps == 1)
workInt[c] = inInt[c];
else
workInt = mult(inInt);
outblk.progressive = inInt[c].progressive;
outblk.Data = workInt[c].Data;
}
if (type == DataBlk.TYPE_FLOAT)
{
if (ncomps == 1)
workFloat[c] = inFloat[c];
else
workFloat = mult(inFloat);
outblk.progressive = inFloat[c].progressive;
outblk.Data = workFloat[c].Data;
}
// Initialize the output block geometry and set the profiled
// data into the output block.
outblk.offset = 0;
outblk.scanw = outblk.w;
return outblk;
}
/// <summary> Returns, in the blk argument, a block of image data containing the
/// specifed rectangular area, in the specified component. The data is
/// returned, as a reference to the internal data, if any, instead of as a
/// copy, therefore the returned data should not be modified.
///
/// <P>The rectangular area to return is specified by the 'ulx', 'uly', 'w'
/// and 'h' members of the 'blk' argument, relative to the current
/// tile. These members are not modified by this method. The 'offset' and
/// 'scanw' of the returned data can be arbitrary. See the 'DataBlk' class.
///
/// <P>This method, in general, is more efficient than the 'getCompData()'
/// method since it may not copy the data. However if the array of returned
/// data is to be modified by the caller then the other method is probably
/// preferable.
///
/// <P>If possible, the data in the returned 'DataBlk' should be the
/// internal data itself, instead of a copy, in order to increase the data
/// transfer efficiency. However, this depends on the particular
/// implementation (it may be more convenient to just return a copy of the
/// data). This is the reason why the returned data should not be modified.
///
/// <P>If the data array in <tt>blk</tt> is <tt>null</tt>, then a new one
/// is created if necessary. The implementation of this interface may
/// choose to return the same array or a new one, depending on what is more
/// efficient. Therefore, the data array in <tt>blk</tt> prior to the
/// method call should not be considered to contain the returned data, a
/// new array may have been created. Instead, get the array from
/// <tt>blk</tt> after the method has returned.
///
/// <P>The returned data may have its 'progressive' attribute set. In this
/// case the returned data is only an approximation of the "final" data.
///
/// </summary>
/// <param name="blk">Its coordinates and dimensions specify the area to return,
/// relative to the current tile. Some fields in this object are modified
/// to return the data.
///
/// </param>
/// <param name="c">The index of the component from which to get the data.
///
/// </param>
/// <returns> The requested DataBlk
///
/// </returns>
/// <seealso cref="getCompData">
/// </seealso>
public override DataBlk getInternCompData(DataBlk out_Renamed, int c)
{
return getCompData(out_Renamed, c);
}
/// <summary> Output a DataBlkFloat array where each sample in each component
/// is the product of the YCC matrix * the vector of samples across
/// the input components.
/// </summary>
/// <param name="inblk">input DataBlkFloat array
/// </param>
/// <returns> output DataBlkFloat array
/// </returns>
private static DataBlkFloat[] mult(DataBlkFloat[] inblk)
{
if (inblk.Length != 3)
throw new System.ArgumentException("bad input array size");
int i, j;
int length = inblk[0].h * inblk[0].w;
DataBlkFloat[] outblk = new DataBlkFloat[3];
float[][] out_Renamed = new float[3][];
float[][] in_Renamed = new float[3][];
for (i = 0; i < 3; ++i)
{
in_Renamed[i] = inblk[i].DataFloat;
outblk[i] = new DataBlkFloat();
copyGeometry(outblk[i], inblk[i]);
outblk[i].offset = inblk[i].offset;
out_Renamed[i] = new float[length];
outblk[i].Data = out_Renamed[i];
}
for (j = 0; j < length; ++j)
{
out_Renamed[0][j] = (Matrix00 * in_Renamed[0][inblk[0].offset + j] + Matrix01 * in_Renamed[1][inblk[1].offset + j] + Matrix02 * in_Renamed[2][inblk[2].offset + j]);
out_Renamed[1][j] = (Matrix10 * in_Renamed[0][inblk[0].offset + j] + Matrix11 * in_Renamed[1][inblk[1].offset + j] + Matrix12 * in_Renamed[2][inblk[2].offset + j]);
out_Renamed[2][j] = (Matrix20 * in_Renamed[0][inblk[0].offset + j] + Matrix21 * in_Renamed[1][inblk[1].offset + j] + Matrix22 * in_Renamed[2][inblk[2].offset + j]);
}
return outblk;
}
/// <summary> Output a DataBlkInt array where each sample in each component
/// is the product of the YCC matrix * the vector of samples across
/// the input components.
/// </summary>
/// <param name="inblk">input DataBlkInt array
/// </param>
/// <returns> output DataBlkInt array
/// </returns>
private static DataBlkInt[] mult(DataBlkInt[] inblk)
{
if (inblk.Length != 3)
throw new System.ArgumentException("bad input array size");
int i, j;
int length = inblk[0].h * inblk[0].w;
DataBlkInt[] outblk = new DataBlkInt[3];
int[][] out_Renamed = new int[3][];
int[][] in_Renamed = new int[3][];
for (i = 0; i < 3; ++i)
{
in_Renamed[i] = inblk[i].DataInt;
outblk[i] = new DataBlkInt();
copyGeometry(outblk[i], inblk[i]);
outblk[i].offset = inblk[i].offset;
out_Renamed[i] = new int[length];
outblk[i].Data = out_Renamed[i];
}
for (j = 0; j < length; ++j)
{
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
out_Renamed[0][j] = (int) (Matrix00 * in_Renamed[0][inblk[0].offset + j] + Matrix01 * in_Renamed[1][inblk[1].offset + j] + Matrix02 * in_Renamed[2][inblk[2].offset + j]);
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
out_Renamed[1][j] = (int) (Matrix10 * in_Renamed[0][inblk[0].offset + j] + Matrix11 * in_Renamed[1][inblk[1].offset + j] + Matrix12 * in_Renamed[2][inblk[2].offset + j]);
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
out_Renamed[2][j] = (int) (Matrix20 * in_Renamed[0][inblk[0].offset + j] + Matrix21 * in_Renamed[1][inblk[1].offset + j] + Matrix22 * in_Renamed[2][inblk[2].offset + j]);
}
return outblk;
}
/// <summary>Return a suitable String representation of the class instance. </summary>
public override System.String ToString()
{
int i;
System.Text.StringBuilder rep_nComps = new System.Text.StringBuilder("ncomps= ").Append(System.Convert.ToString(ncomps));
System.Text.StringBuilder rep_comps = new System.Text.StringBuilder();
for (i = 0; i < ncomps; ++i)
{
rep_comps.Append(" ").Append("component[").Append(System.Convert.ToString(i)).Append("] height, width = (").Append(src.getCompImgHeight(i)).Append(", ").Append(src.getCompImgWidth(i)).Append(")").Append(eol);
}
System.Text.StringBuilder rep = new System.Text.StringBuilder("[SYccColorSpaceMapper ");
rep.Append(rep_nComps).Append(eol);
rep.Append(rep_comps).Append(" ");
return rep.Append("]").ToString();
}
/* end class SYccColorSpaceMapper */
}
}
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