corrade-vassal – Rev 1
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/*
* CVS identifier:
*
* $Id: QuantStepSizeSpec.java,v 1.12 2001/10/24 12:05:04 grosbois Exp $
*
* Class: QuantStepSizeSpec
*
* Description: Quantization base normalized step size specifications
*
*
*
* COPYRIGHT:
*
* This software module was originally developed by Raphaël Grosbois and
* Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel
* Askelöf (Ericsson Radio Systems AB); and Bertrand Berthelot, David
* Bouchard, Félix Henry, Gerard Mozelle and Patrice Onno (Canon Research
* Centre France S.A) in the course of development of the JPEG2000
* standard as specified by ISO/IEC 15444 (JPEG 2000 Standard). This
* software module is an implementation of a part of the JPEG 2000
* Standard. Swiss Federal Institute of Technology-EPFL, Ericsson Radio
* Systems AB and Canon Research Centre France S.A (collectively JJ2000
* Partners) agree not to assert against ISO/IEC and users of the JPEG
* 2000 Standard (Users) any of their rights under the copyright, not
* including other intellectual property rights, for this software module
* with respect to the usage by ISO/IEC and Users of this software module
* or modifications thereof for use in hardware or software products
* claiming conformance to the JPEG 2000 Standard. Those intending to use
* this software module in hardware or software products are advised that
* their use may infringe existing patents. The original developers of
* this software module, JJ2000 Partners and ISO/IEC assume no liability
* for use of this software module or modifications thereof. No license
* or right to this software module is granted for non JPEG 2000 Standard
* conforming products. JJ2000 Partners have full right to use this
* software module for his/her own purpose, assign or donate this
* software module to any third party and to inhibit third parties from
* using this software module for non JPEG 2000 Standard conforming
* products. This copyright notice must be included in all copies or
* derivative works of this software module.
*
* Copyright (c) 1999/2000 JJ2000 Partners.
* */
using System;
using CSJ2K.j2k.util;
using CSJ2K.j2k;
namespace CSJ2K.j2k.quantization
{
/// <summary> This class extends ModuleSpec class in order to hold specifications about
/// the quantization base normalized step size to use in each tile-component.
///
/// </summary>
/// <seealso cref="ModuleSpec">
///
/// </seealso>
public class QuantStepSizeSpec:ModuleSpec
{
/// <summary> Constructs an empty 'QuantStepSizeSpec' with specified number of
/// tile and components. This constructor is called by the decoder.
///
/// </summary>
/// <param name="nt">Number of tiles
///
/// </param>
/// <param name="nc">Number of components
///
/// </param>
/// <param name="type">the type of the specification module i.e. tile specific,
/// component specific or both.
///
/// </param>
public QuantStepSizeSpec(int nt, int nc, byte type):base(nt, nc, type)
{
}
/// <summary> Constructs a new 'QuantStepSizeSpec' for the specified number of
/// components and tiles and the arguments of "-Qstep" option.
///
/// </summary>
/// <param name="nt">The number of tiles
///
/// </param>
/// <param name="nc">The number of components
///
/// </param>
/// <param name="type">the type of the specification module i.e. tile specific,
/// component specific or both.
///
/// </param>
/// <param name="pl">The ParameterList
///
/// </param>
public QuantStepSizeSpec(int nt, int nc, byte type, ParameterList pl):base(nt, nc, type)
{
System.String param = pl.getParameter("Qstep");
if (param == null)
{
throw new System.ArgumentException("Qstep option not specified");
}
// Parse argument
SupportClass.Tokenizer stk = new SupportClass.Tokenizer(param);
System.String word; // current word
byte curSpecType = SPEC_DEF; // Specification type of the
// current parameter
bool[] tileSpec = null; // Tiles concerned by the specification
bool[] compSpec = null; // Components concerned by the specification
System.Single value_Renamed; // value of the current step size
while (stk.HasMoreTokens())
{
word = stk.NextToken().ToLower();
switch (word[0])
{
case 't': // Tiles specification
tileSpec = parseIdx(word, nTiles);
if (curSpecType == SPEC_COMP_DEF)
curSpecType = SPEC_TILE_COMP;
else
curSpecType = SPEC_TILE_DEF;
break;
case 'c': // Components specification
compSpec = parseIdx(word, nComp);
if (curSpecType == SPEC_TILE_DEF)
curSpecType = SPEC_TILE_COMP;
else
curSpecType = SPEC_COMP_DEF;
break;
default: // Step size value
try
{
//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'"
value_Renamed = System.Single.Parse(word);
}
catch (System.FormatException)
{
throw new System.ArgumentException("Bad parameter for " + "-Qstep option : " + word);
}
//UPGRADE_TODO: The equivalent in .NET for method 'java.lang.Float.floatValue' may return a different value. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1043'"
if ((float) value_Renamed <= 0.0f)
{
//UPGRADE_TODO: The equivalent in .NET for method 'java.lang.Float.toString' may return a different value. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1043'"
throw new System.ArgumentException("Normalized base step " + "must be positive : " + value_Renamed);
}
if (curSpecType == SPEC_DEF)
{
setDefault((System.Object) value_Renamed);
}
else if (curSpecType == SPEC_TILE_DEF)
{
for (int i = tileSpec.Length - 1; i >= 0; i--)
if (tileSpec[i])
{
setTileDef(i, (System.Object) value_Renamed);
}
}
else if (curSpecType == SPEC_COMP_DEF)
{
for (int i = compSpec.Length - 1; i >= 0; i--)
if (compSpec[i])
{
setCompDef(i, (System.Object) value_Renamed);
}
}
else
{
for (int i = tileSpec.Length - 1; i >= 0; i--)
{
for (int j = compSpec.Length - 1; j >= 0; j--)
{
if (tileSpec[i] && compSpec[j])
{
setTileCompVal(i, j, (System.Object) value_Renamed);
}
}
}
}
// Re-initialize
curSpecType = SPEC_DEF;
tileSpec = null;
compSpec = null;
break;
}
}
// Check that default value has been specified
if (getDefault() == null)
{
int ndefspec = 0;
for (int t = nt - 1; t >= 0; t--)
{
for (int c = nc - 1; c >= 0; c--)
{
if (specValType[t][c] == SPEC_DEF)
{
ndefspec++;
}
}
}
// If some tile-component have received no specification, it takes
// the default value defined in ParameterList
if (ndefspec != 0)
{
//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'"
setDefault((System.Object) System.Single.Parse(pl.DefaultParameterList.getParameter("Qstep")));
}
else
{
// All tile-component have been specified, takes the first
// tile-component value as default.
setDefault(getTileCompVal(0, 0));
switch (specValType[0][0])
{
case SPEC_TILE_DEF:
for (int c = nc - 1; c >= 0; c--)
{
if (specValType[0][c] == SPEC_TILE_DEF)
specValType[0][c] = SPEC_DEF;
}
tileDef[0] = null;
break;
case SPEC_COMP_DEF:
for (int t = nt - 1; t >= 0; t--)
{
if (specValType[t][0] == SPEC_COMP_DEF)
specValType[t][0] = SPEC_DEF;
}
compDef[0] = null;
break;
case SPEC_TILE_COMP:
specValType[0][0] = SPEC_DEF;
tileCompVal["t0c0"] = null;
break;
}
}
}
}
}
}
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