eff1ff4b41
* Fixed a typo in OpenJPEG.J2KLayerInfo (only affected debug display) git-svn-id: http://libopenmetaverse.googlecode.com/svn/libopenmetaverse/trunk@3118 52acb1d6-8a22-11de-b505-999d5b087335
213 lines
8.4 KiB
C#
213 lines
8.4 KiB
C#
/// <summary>**************************************************************************
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///
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/// $Id: MonochromeTransformTosRGB.java,v 1.1 2002/07/25 14:56:50 grosbois Exp $
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///
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/// Copyright Eastman Kodak Company, 343 State Street, Rochester, NY 14650
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/// $Date $
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/// ***************************************************************************
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/// </summary>
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using System;
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using ColorSpace = CSJ2K.Color.ColorSpace;
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using ICCProfile = CSJ2K.Icc.ICCProfile;
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using RestrictedICCProfile = CSJ2K.Icc.RestrictedICCProfile;
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using DataBlkInt = CSJ2K.j2k.image.DataBlkInt;
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using DataBlkFloat = CSJ2K.j2k.image.DataBlkFloat;
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namespace CSJ2K.Icc.Lut
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{
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/// <summary>
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/// This class constructs a LookUpTableFP from a RestrictedICCProfile.
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/// The values in this table are used to calculate a second lookup table (simply a short []).
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/// table. When this transform is applied to an input DataBlk, an output data block is
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/// constructed by using the input samples as indices into the lookup table, whose values
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/// are used to populate the output DataBlk.
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///
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/// </summary>
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/// <seealso cref="jj2000.j2k.icc.RestrictedICCProfile">
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/// </seealso>
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/// <seealso cref="jj2000.j2k.icc.lut.LookUpTableFP">
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/// </seealso>
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/// <version> 1.0
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/// </version>
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/// <author> Bruce A. Kern
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/// </author>
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public class MonochromeTransformTosRGB
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{
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//UPGRADE_NOTE: Final was removed from the declaration of 'eol '. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
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private static readonly System.String eol = System.Environment.NewLine;
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/// <summary>Transform parameter. </summary>
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public const double ksRGBShadowCutoff = 0.0031308;
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/// <summary>Transform parameter. </summary>
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public const double ksRGBShadowSlope = 12.92;
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/// <summary>Transform parameter. </summary>
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//UPGRADE_NOTE: Final was removed from the declaration of 'ksRGB8ShadowSlope '. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
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public static readonly double ksRGB8ShadowSlope = (255 * ksRGBShadowSlope);
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/// <summary>Transform parameter. </summary>
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public const double ksRGBExponent = (1.0 / 2.4);
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/// <summary>Transform parameter. </summary>
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public const double ksRGB8ScaleAfterExp = 269.025;
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/// <summary>Transform parameter. </summary>
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public const double ksRGB8ReduceAfterExp = 14.025;
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private short[] lut = null;
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private int dwInputMaxValue = 0;
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private LookUpTableFP fLut = null;
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/// <summary> String representation of class</summary>
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/// <returns> suitable representation for class
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/// </returns>
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public override System.String ToString()
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{
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System.Text.StringBuilder rep = new System.Text.StringBuilder("[MonochromeTransformTosRGB ");
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System.Text.StringBuilder body = new System.Text.StringBuilder(" ");
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// Print the parameters:
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body.Append(eol).Append("ksRGBShadowSlope= ").Append(System.Convert.ToString(ksRGBShadowSlope));
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body.Append(eol).Append("ksRGBShadowCutoff= ").Append(System.Convert.ToString(ksRGBShadowCutoff));
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body.Append(eol).Append("ksRGBShadowSlope= ").Append(System.Convert.ToString(ksRGBShadowSlope));
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body.Append(eol).Append("ksRGB8ShadowSlope= ").Append(System.Convert.ToString(ksRGB8ShadowSlope));
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body.Append(eol).Append("ksRGBExponent= ").Append(System.Convert.ToString(ksRGBExponent));
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body.Append(eol).Append("ksRGB8ScaleAfterExp= ").Append(System.Convert.ToString(ksRGB8ScaleAfterExp));
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body.Append(eol).Append("ksRGB8ReduceAfterExp= ").Append(System.Convert.ToString((ksRGB8ReduceAfterExp)));
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body.Append(eol).Append("dwInputMaxValue= ").Append(System.Convert.ToString(dwInputMaxValue));
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// Print the LinearSRGBtoSRGB lut.
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body.Append(eol).Append("[lut = [short[" + lut.Length + "]]]");
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// Print the FP luts.
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//UPGRADE_TODO: The equivalent in .NET for method 'java.lang.Object.toString' may return a different value. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1043'"
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body.Append(eol).Append("fLut= " + fLut.ToString());
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rep.Append(ColorSpace.indent(" ", body));
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return rep.Append("]").ToString();
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}
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/// <summary> Construct the lut from the RestrictedICCProfile.
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///
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/// </summary>
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/// <param name="ricc">input RestrictedICCProfile
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/// </param>
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/// <param name="dwInputMaxValue">size of the output lut.
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/// </param>
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/// <param name="dwInputShiftValue">value used to shift samples to positive
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/// </param>
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public MonochromeTransformTosRGB(RestrictedICCProfile ricc, int dwInputMaxValue, int dwInputShiftValue)
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{
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if (ricc.Type != RestrictedICCProfile.kMonochromeInput)
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throw new System.ArgumentException("MonochromeTransformTosRGB: wrong type ICCProfile supplied");
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this.dwInputMaxValue = dwInputMaxValue;
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lut = new short[dwInputMaxValue + 1];
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fLut = LookUpTableFP.createInstance(ricc.trc[ICCProfile.GRAY], dwInputMaxValue + 1);
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// First calculate the value for the shadow region
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int i;
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for (i = 0; ((i <= dwInputMaxValue) && (fLut.lut[i] <= ksRGBShadowCutoff)); i++)
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{
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//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'"
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lut[i] = (short) (System.Math.Floor(ksRGB8ShadowSlope * (double) fLut.lut[i] + 0.5) - dwInputShiftValue);
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}
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// Now calculate the rest
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for (; i <= dwInputMaxValue; i++)
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{
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//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'"
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lut[i] = (short) (System.Math.Floor(ksRGB8ScaleAfterExp * System.Math.Pow((double) fLut.lut[i], ksRGBExponent) - ksRGB8ReduceAfterExp + 0.5) - dwInputShiftValue);
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}
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}
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/// <summary> Populate the output block by looking up the values in the lut, using the input
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/// as lut indices.
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/// </summary>
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/// <param name="inb">input samples
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/// </param>
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/// <param name="outb">output samples.
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/// </param>
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/// <exception cref="MonochromeTransformException">
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/// </exception>
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public virtual void apply(DataBlkInt inb, DataBlkInt outb)
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{
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int i, j, o; // x, y removed
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int[] in_Renamed = (int[]) inb.Data;
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int[] out_Renamed = (int[]) outb.Data;
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if (out_Renamed == null || out_Renamed.Length < in_Renamed.Length)
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{
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out_Renamed = new int[in_Renamed.Length];
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outb.Data = out_Renamed;
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}
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outb.uly = inb.uly;
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outb.ulx = inb.ulx;
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outb.h = inb.h;
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outb.w = inb.w;
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outb.offset = inb.offset;
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outb.scanw = inb.scanw;
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o = inb.offset;
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for (i = 0; i < inb.h * inb.w; ++i)
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{
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j = in_Renamed[i];
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if (j < 0)
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j = 0;
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else if (j > dwInputMaxValue)
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j = dwInputMaxValue;
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out_Renamed[i] = lut[j];
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}
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}
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/// <summary> Populate the output block by looking up the values in the lut, using the input
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/// as lut indices.
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/// </summary>
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/// <param name="inb">input samples
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/// </param>
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/// <param name="outb">output samples.
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/// </param>
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/// <exception cref="MonochromeTransformException">
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/// </exception>
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public virtual void apply(DataBlkFloat inb, DataBlkFloat outb)
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{
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int i, j, o; // x, y removed
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float[] in_Renamed = (float[]) inb.Data;
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float[] out_Renamed = (float[]) outb.Data;
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if (out_Renamed == null || out_Renamed.Length < in_Renamed.Length)
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{
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out_Renamed = new float[in_Renamed.Length];
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outb.Data = out_Renamed;
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outb.uly = inb.uly;
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outb.ulx = inb.ulx;
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outb.h = inb.h;
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outb.w = inb.w;
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outb.offset = inb.offset;
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outb.scanw = inb.scanw;
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}
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o = inb.offset;
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for (i = 0; i < inb.h * inb.w; ++i)
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{
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//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'"
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j = (int) in_Renamed[i];
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if (j < 0)
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j = 0;
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else if (j > dwInputMaxValue)
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j = dwInputMaxValue;
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out_Renamed[i] = lut[j];
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}
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}
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/* end class MonochromeTransformTosRGB */
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}
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} |