/// <summary>
/// Creates a zeroed destination Raster with the correct size and number of
/// bands, given this source. </summary>
/// <param name="src"> the specified <code>Raster</code> </param>
/// <returns> a <code>WritableRaster</code> with the correct size and number
/// of bands from the specified <code>src</code> </returns>
/// <exception cref="IllegalArgumentException"> if this <code>ColorConvertOp</code>
/// was created without sufficient information to define the
/// <code>dst</code> and <code>src</code> color spaces </exception>
public virtual WritableRaster CreateCompatibleDestRaster(Raster src)
{
int ncomponents;
if (CSList != null)
{
/* non-ICC case */
if (CSList.Length != 2)
{
throw new IllegalArgumentException("Destination ColorSpace is undefined");
}
ncomponents = CSList[1].NumComponents;
}
else
{
/* ICC case */
int nProfiles = ProfileList.Length;
if (nProfiles < 2)
{
throw new IllegalArgumentException("Destination ColorSpace is undefined");
}
ncomponents = ProfileList[nProfiles - 1].NumComponents;
}
WritableRaster dest = Raster.CreateInterleavedRaster(DataBuffer.TYPE_BYTE, src.Width, src.Height, ncomponents, new Point(src.MinX, src.MinY));
return(dest);
}
/// <summary>
/// Transforms the source <CODE>Raster</CODE> and stores the results in
/// the destination <CODE>Raster</CODE>. This operation performs the
/// transform band by band.
/// <para>
/// If the destination <CODE>Raster</CODE> is null, a new
/// <CODE>Raster</CODE> is created.
/// An <CODE>IllegalArgumentException</CODE> may be thrown if the source is
/// the same as the destination or if the number of bands in
/// the source is not equal to the number of bands in the
/// destination.
/// </para>
/// <para>
/// The coordinates of the rectangle returned by
/// <code>getBounds2D(Raster)</code>
/// are not necessarily the same as the coordinates of the
/// <code>WritableRaster</code> returned by this method. If the
/// upper-left corner coordinates of rectangle are negative then
/// this part of the rectangle is not drawn. If the coordinates
/// of the rectangle are positive then the filtered image is drawn at
/// that position in the destination <code>Raster</code>.
/// </para>
/// <para>
/// </para>
/// </summary>
/// <param name="src"> The <CODE>Raster</CODE> to transform. </param>
/// <param name="dst"> The <CODE>Raster</CODE> in which to store the results of the
/// transformation.
/// </param>
/// <returns> The transformed <CODE>Raster</CODE>.
/// </returns>
/// <exception cref="ImagingOpException"> if the raster cannot be transformed
/// because of a data-processing error that might be
/// caused by an invalid image format, tile format, or
/// image-processing operation, or any other unsupported
/// operation. </exception>
public WritableRaster Filter(Raster src, WritableRaster dst)
{
if (src == null)
{
throw new NullPointerException("src image is null");
}
if (dst == null)
{
dst = CreateCompatibleDestRaster(src);
}
if (src == dst)
{
throw new IllegalArgumentException("src image cannot be the " + "same as the dst image");
}
if (src.NumBands != dst.NumBands)
{
throw new IllegalArgumentException("Number of src bands (" + src.NumBands + ") does not match number of " + " dst bands (" + dst.NumBands + ")");
}
if (ImagingLib.filter(this, src, dst) == null)
{
throw new ImagingOpException("Unable to transform src image");
}
return(dst);
}
private void ShortFilter(ShortLookupTable lookup, Raster src, WritableRaster dst, int width, int height, int numBands)
{
int band;
int[] srcPix = null;
// Find the ref to the table and the offset
short[][] table = lookup.Table;
int offset = lookup.Offset;
int tidx;
int step = 1;
// Check if it is one lookup applied to all bands
if (table.Length == 1)
{
step = 0;
}
int x = 0;
int y = 0;
int index;
int maxShort = (1 << 16) - 1;
// Loop through the data
for (y = 0; y < height; y++)
{
tidx = 0;
for (band = 0; band < numBands; band++, tidx += step)
{
// Find data for this band, scanline
srcPix = src.GetSamples(0, y, width, 1, band, srcPix);
for (x = 0; x < width; x++)
{
index = srcPix[x] - offset;
if (index < 0 || index > maxShort)
{
throw new IllegalArgumentException("index out of range " + index + " x is " + x + "srcPix[x]=" + srcPix[x] + " offset=" + offset);
}
// Do the lookup
srcPix[x] = table[tidx][index];
}
// Put it back
dst.SetSamples(0, y, width, 1, band, srcPix);
}
}
}
/// <summary>
/// Creates a zeroed destination image with the correct size and number
/// of bands. If destCM is null, an appropriate ColorModel will be used. </summary>
/// <param name="src"> Source image for the filter operation. </param>
/// <param name="destCM"> ColorModel of the destination. Can be null. </param>
/// <returns> a destination <code>BufferedImage</code> with the correct
/// size and number of bands. </returns>
public virtual BufferedImage CreateCompatibleDestImage(BufferedImage src, ColorModel destCM)
{
BufferedImage image;
int w = src.Width;
int h = src.Height;
WritableRaster wr = null;
if (destCM == null)
{
destCM = src.ColorModel;
// Not much support for ICM
if (destCM is IndexColorModel)
{
destCM = ColorModel.RGBdefault;
}
else
{
/* Create destination image as similar to the source
* as it possible...
*/
wr = src.Data.CreateCompatibleWritableRaster(w, h);
}
}
if (wr == null)
{
/* This is the case when destination color model
* was explicitly specified (and it may be not compatible
* with source raster structure) or source is indexed image.
* We should use destination color model to create compatible
* destination raster here.
*/
wr = destCM.CreateCompatibleWritableRaster(w, h);
}
image = new BufferedImage(destCM, wr, destCM.AlphaPremultiplied, null);
return(image);
}
/// <summary>
/// Performs a convolution on Rasters. Each band of the source Raster
/// will be convolved.
/// The source and destination must have the same number of bands.
/// If the destination Raster is null, a new Raster will be created.
/// The IllegalArgumentException may be thrown if the source is
/// the same as the destination. </summary>
/// <param name="src"> the source <code>Raster</code> to filter </param>
/// <param name="dst"> the destination <code>WritableRaster</code> for the
/// filtered <code>src</code> </param>
/// <returns> the filtered <code>WritableRaster</code> </returns>
/// <exception cref="NullPointerException"> if <code>src</code> is <code>null</code> </exception>
/// <exception cref="ImagingOpException"> if <code>src</code> and <code>dst</code>
/// do not have the same number of bands </exception>
/// <exception cref="ImagingOpException"> if <code>src</code> cannot be filtered </exception>
/// <exception cref="IllegalArgumentException"> if <code>src</code> equals
/// <code>dst</code> </exception>
public WritableRaster Filter(Raster src, WritableRaster dst)
{
if (dst == null)
{
dst = CreateCompatibleDestRaster(src);
}
else if (src == dst)
{
throw new IllegalArgumentException("src image cannot be the " + "same as the dst image");
}
else if (src.NumBands != dst.NumBands)
{
throw new ImagingOpException("Different number of bands in src " + " and dst Rasters");
}
if (ImagingLib.filter(this, src, dst) == null)
{
throw new ImagingOpException("Unable to convolve src image");
}
return(dst);
}
/// <summary>
/// Performs a lookup operation on a <code>BufferedImage</code>.
/// If the color model in the source image is not the same as that
/// in the destination image, the pixels will be converted
/// in the destination. If the destination image is <code>null</code>,
/// a <code>BufferedImage</code> will be created with an appropriate
/// <code>ColorModel</code>. An <code>IllegalArgumentException</code>
/// might be thrown if the number of arrays in the
/// <code>LookupTable</code> does not meet the restrictions
/// stated in the class comment above, or if the source image
/// has an <code>IndexColorModel</code>. </summary>
/// <param name="src"> the <code>BufferedImage</code> to be filtered </param>
/// <param name="dst"> the <code>BufferedImage</code> in which to
/// store the results of the filter operation </param>
/// <returns> the filtered <code>BufferedImage</code>. </returns>
/// <exception cref="IllegalArgumentException"> if the number of arrays in the
/// <code>LookupTable</code> does not meet the restrictions
/// described in the class comments, or if the source image
/// has an <code>IndexColorModel</code>. </exception>
public BufferedImage Filter(BufferedImage src, BufferedImage dst)
{
ColorModel srcCM = src.ColorModel;
int numBands = srcCM.NumColorComponents;
ColorModel dstCM;
if (srcCM is IndexColorModel)
{
throw new IllegalArgumentException("LookupOp cannot be " + "performed on an indexed image");
}
int numComponents = Ltable.NumComponents;
if (numComponents != 1 && numComponents != srcCM.NumComponents && numComponents != srcCM.NumColorComponents)
{
throw new IllegalArgumentException("Number of arrays in the " + " lookup table (" + numComponents + " is not compatible with the " + " src image: " + src);
}
bool needToConvert = false;
int width = src.Width;
int height = src.Height;
if (dst == null)
{
dst = CreateCompatibleDestImage(src, null);
dstCM = srcCM;
}
else
{
if (width != dst.Width)
{
throw new IllegalArgumentException("Src width (" + width + ") not equal to dst width (" + dst.Width + ")");
}
if (height != dst.Height)
{
throw new IllegalArgumentException("Src height (" + height + ") not equal to dst height (" + dst.Height + ")");
}
dstCM = dst.ColorModel;
if (srcCM.ColorSpace.Type != dstCM.ColorSpace.Type)
{
needToConvert = true;
dst = CreateCompatibleDestImage(src, null);
}
}
BufferedImage origDst = dst;
if (ImagingLib.filter(this, src, dst) == null)
{
// Do it the slow way
WritableRaster srcRaster = src.Raster;
WritableRaster dstRaster = dst.Raster;
if (srcCM.HasAlpha())
{
if (numBands - 1 == numComponents || numComponents == 1)
{
int minx = srcRaster.MinX;
int miny = srcRaster.MinY;
int[] bands = new int[numBands - 1];
for (int i = 0; i < numBands - 1; i++)
{
bands[i] = i;
}
srcRaster = srcRaster.CreateWritableChild(minx, miny, srcRaster.Width, srcRaster.Height, minx, miny, bands);
}
}
if (dstCM.HasAlpha())
{
int dstNumBands = dstRaster.NumBands;
if (dstNumBands - 1 == numComponents || numComponents == 1)
{
int minx = dstRaster.MinX;
int miny = dstRaster.MinY;
int[] bands = new int[numBands - 1];
for (int i = 0; i < numBands - 1; i++)
{
bands[i] = i;
}
dstRaster = dstRaster.CreateWritableChild(minx, miny, dstRaster.Width, dstRaster.Height, minx, miny, bands);
}
}
Filter(srcRaster, dstRaster);
}
if (needToConvert)
{
// ColorModels are not the same
ColorConvertOp ccop = new ColorConvertOp(Hints);
ccop.Filter(dst, origDst);
}
return(origDst);
}
/// <summary>
/// Performs a lookup operation on a <code>Raster</code>.
/// If the destination <code>Raster</code> is <code>null</code>,
/// a new <code>Raster</code> will be created.
/// The <code>IllegalArgumentException</code> might be thrown
/// if the source <code>Raster</code> and the destination
/// <code>Raster</code> do not have the same
/// number of bands or if the number of arrays in the
/// <code>LookupTable</code> does not meet the
/// restrictions stated in the class comment above. </summary>
/// <param name="src"> the source <code>Raster</code> to filter </param>
/// <param name="dst"> the destination <code>WritableRaster</code> for the
/// filtered <code>src</code> </param>
/// <returns> the filtered <code>WritableRaster</code>. </returns>
/// <exception cref="IllegalArgumentException"> if the source and destinations
/// rasters do not have the same number of bands, or the
/// number of arrays in the <code>LookupTable</code> does
/// not meet the restrictions described in the class comments.
/// </exception>
public WritableRaster Filter(Raster src, WritableRaster dst)
{
int numBands = src.NumBands;
int dstLength = dst.NumBands;
int height = src.Height;
int width = src.Width;
int[] srcPix = new int[numBands];
// Create a new destination Raster, if needed
if (dst == null)
{
dst = CreateCompatibleDestRaster(src);
}
else if (height != dst.Height || width != dst.Width)
{
throw new IllegalArgumentException("Width or height of Rasters do not " + "match");
}
dstLength = dst.NumBands;
if (numBands != dstLength)
{
throw new IllegalArgumentException("Number of channels in the src (" + numBands + ") does not match number of channels" + " in the destination (" + dstLength + ")");
}
int numComponents = Ltable.NumComponents;
if (numComponents != 1 && numComponents != src.NumBands)
{
throw new IllegalArgumentException("Number of arrays in the " + " lookup table (" + numComponents + " is not compatible with the " + " src Raster: " + src);
}
if (ImagingLib.filter(this, src, dst) != null)
{
return(dst);
}
// Optimize for cases we know about
if (Ltable is ByteLookupTable)
{
ByteFilter((ByteLookupTable)Ltable, src, dst, width, height, numBands);
}
else if (Ltable is ShortLookupTable)
{
ShortFilter((ShortLookupTable)Ltable, src, dst, width, height, numBands);
}
else
{
// Not one we recognize so do it slowly
int sminX = src.MinX;
int sY = src.MinY;
int dminX = dst.MinX;
int dY = dst.MinY;
for (int y = 0; y < height; y++, sY++, dY++)
{
int sX = sminX;
int dX = dminX;
for (int x = 0; x < width; x++, sX++, dX++)
{
// Find data for all bands at this x,y position
src.GetPixel(sX, sY, srcPix);
// Lookup the data for all bands at this x,y position
Ltable.LookupPixel(srcPix, srcPix);
// Put it back for all bands
dst.SetPixel(dX, dY, srcPix);
}
}
}
return(dst);
}
private BufferedImage NonICCBIFilter(BufferedImage src, ColorSpace srcColorSpace, BufferedImage dst, ColorSpace dstColorSpace)
{
int w = src.Width;
int h = src.Height;
ICC_ColorSpace ciespace = (ICC_ColorSpace)ColorSpace.GetInstance(ColorSpace.CS_CIEXYZ);
if (dst == null)
{
dst = CreateCompatibleDestImage(src, null);
dstColorSpace = dst.ColorModel.ColorSpace;
}
else
{
if ((h != dst.Height) || (w != dst.Width))
{
throw new IllegalArgumentException("Width or height of BufferedImages do not match");
}
}
Raster srcRas = src.Raster;
WritableRaster dstRas = dst.Raster;
ColorModel srcCM = src.ColorModel;
ColorModel dstCM = dst.ColorModel;
int srcNumComp = srcCM.NumColorComponents;
int dstNumComp = dstCM.NumColorComponents;
bool dstHasAlpha = dstCM.HasAlpha();
bool needSrcAlpha = srcCM.HasAlpha() && dstHasAlpha;
ColorSpace[] list;
if ((CSList == null) && (ProfileList.Length != 0))
{
/* possible non-ICC src, some profiles, possible non-ICC dst */
bool nonICCSrc, nonICCDst;
ICC_Profile srcProfile, dstProfile;
if (!(srcColorSpace is ICC_ColorSpace))
{
nonICCSrc = true;
srcProfile = ciespace.Profile;
}
else
{
nonICCSrc = false;
srcProfile = ((ICC_ColorSpace)srcColorSpace).Profile;
}
if (!(dstColorSpace is ICC_ColorSpace))
{
nonICCDst = true;
dstProfile = ciespace.Profile;
}
else
{
nonICCDst = false;
dstProfile = ((ICC_ColorSpace)dstColorSpace).Profile;
}
/* make a new transform if needed */
if ((ThisTransform == null) || (ThisSrcProfile != srcProfile) || (ThisDestProfile != dstProfile))
{
UpdateBITransform(srcProfile, dstProfile);
}
// process per scanline
float maxNum = 65535.0f; // use 16-bit precision in CMM
ColorSpace cs;
int iccSrcNumComp;
if (nonICCSrc)
{
cs = ciespace;
iccSrcNumComp = 3;
}
else
{
cs = srcColorSpace;
iccSrcNumComp = srcNumComp;
}
float[] srcMinVal = new float[iccSrcNumComp];
float[] srcInvDiffMinMax = new float[iccSrcNumComp];
for (int i = 0; i < srcNumComp; i++)
{
srcMinVal[i] = cs.GetMinValue(i);
srcInvDiffMinMax[i] = maxNum / (cs.GetMaxValue(i) - srcMinVal[i]);
}
int iccDstNumComp;
if (nonICCDst)
{
cs = ciespace;
iccDstNumComp = 3;
}
else
{
cs = dstColorSpace;
iccDstNumComp = dstNumComp;
}
float[] dstMinVal = new float[iccDstNumComp];
float[] dstDiffMinMax = new float[iccDstNumComp];
for (int i = 0; i < dstNumComp; i++)
{
dstMinVal[i] = cs.GetMinValue(i);
dstDiffMinMax[i] = (cs.GetMaxValue(i) - dstMinVal[i]) / maxNum;
}
float[] dstColor;
if (dstHasAlpha)
{
int size = ((dstNumComp + 1) > 3) ? (dstNumComp + 1) : 3;
dstColor = new float[size];
}
else
{
int size = (dstNumComp > 3) ? dstNumComp : 3;
dstColor = new float[size];
}
short[] srcLine = new short[w * iccSrcNumComp];
short[] dstLine = new short[w * iccDstNumComp];
Object pixel;
float[] color;
float[] alpha = null;
if (needSrcAlpha)
{
alpha = new float[w];
}
int idx;
// process each scanline
for (int y = 0; y < h; y++)
{
// convert src scanline
pixel = null;
color = null;
idx = 0;
for (int x = 0; x < w; x++)
{
pixel = srcRas.GetDataElements(x, y, pixel);
color = srcCM.GetNormalizedComponents(pixel, color, 0);
if (needSrcAlpha)
{
alpha[x] = color[srcNumComp];
}
if (nonICCSrc)
{
color = srcColorSpace.ToCIEXYZ(color);
}
for (int i = 0; i < iccSrcNumComp; i++)
{
srcLine[idx++] = (short)((color[i] - srcMinVal[i]) * srcInvDiffMinMax[i] + 0.5f);
}
}
// color convert srcLine to dstLine
ThisTransform.colorConvert(srcLine, dstLine);
// convert dst scanline
pixel = null;
idx = 0;
for (int x = 0; x < w; x++)
{
for (int i = 0; i < iccDstNumComp; i++)
{
dstColor[i] = ((float)(dstLine[idx++] & 0xffff)) * dstDiffMinMax[i] + dstMinVal[i];
}
if (nonICCDst)
{
color = srcColorSpace.FromCIEXYZ(dstColor);
for (int i = 0; i < dstNumComp; i++)
{
dstColor[i] = color[i];
}
}
if (needSrcAlpha)
{
dstColor[dstNumComp] = alpha[x];
}
else if (dstHasAlpha)
{
dstColor[dstNumComp] = 1.0f;
}
pixel = dstCM.GetDataElements(dstColor, 0, pixel);
dstRas.SetDataElements(x, y, pixel);
}
}
}
else
{
/* possible non-ICC src, possible CSList, possible non-ICC dst */
// process per pixel
int numCS;
if (CSList == null)
{
numCS = 0;
}
else
{
numCS = CSList.Length;
}
float[] dstColor;
if (dstHasAlpha)
{
dstColor = new float[dstNumComp + 1];
}
else
{
dstColor = new float[dstNumComp];
}
Object spixel = null;
Object dpixel = null;
float[] color = null;
float[] tmpColor;
// process each pixel
for (int y = 0; y < h; y++)
{
for (int x = 0; x < w; x++)
{
spixel = srcRas.GetDataElements(x, y, spixel);
color = srcCM.GetNormalizedComponents(spixel, color, 0);
tmpColor = srcColorSpace.ToCIEXYZ(color);
for (int i = 0; i < numCS; i++)
{
tmpColor = CSList[i].FromCIEXYZ(tmpColor);
tmpColor = CSList[i].ToCIEXYZ(tmpColor);
}
tmpColor = dstColorSpace.FromCIEXYZ(tmpColor);
for (int i = 0; i < dstNumComp; i++)
{
dstColor[i] = tmpColor[i];
}
if (needSrcAlpha)
{
dstColor[dstNumComp] = color[srcNumComp];
}
else if (dstHasAlpha)
{
dstColor[dstNumComp] = 1.0f;
}
dpixel = dstCM.GetDataElements(dstColor, 0, dpixel);
dstRas.SetDataElements(x, y, dpixel);
}
}
}
return(dst);
}
/// <summary>
/// Constructs a WritableRaster with the given SampleModel, DataBuffer,
/// and parent.
/// </summary>
public WritableRaster(SampleModel @sampleModel, DataBuffer @dataBuffer, Rectangle @aRegion, Point @sampleModelTranslate, WritableRaster @parent)
: base(sampleModel, null)
{
}
/// <summary>
/// ColorConverts the image data in the source Raster.
/// If the destination Raster is null, a new Raster will be created.
/// The number of bands in the source and destination Rasters must
/// meet the requirements explained above. The constructor used to
/// create this ColorConvertOp must have provided enough information
/// to define both source and destination color spaces. See above.
/// Otherwise, an exception is thrown. </summary>
/// <param name="src"> the source <code>Raster</code> to be converted </param>
/// <param name="dest"> the destination <code>WritableRaster</code>,
/// or <code>null</code> </param>
/// <returns> <code>dest</code> color converted from <code>src</code>
/// or a new, converted <code>WritableRaster</code>
/// if <code>dest</code> is <code>null</code> </returns>
/// <exception cref="IllegalArgumentException"> if the number of source or
/// destination bands is incorrect, the source or destination
/// color spaces are undefined, or this op was constructed
/// with one of the constructors that applies only to
/// operations on BufferedImages. </exception>
public WritableRaster Filter(Raster src, WritableRaster dest)
{
if (CSList != null)
{
/* non-ICC case */
return(NonICCRasterFilter(src, dest));
}
int nProfiles = ProfileList.Length;
if (nProfiles < 2)
{
throw new IllegalArgumentException("Source or Destination ColorSpace is undefined");
}
if (src.NumBands != ProfileList[0].NumComponents)
{
throw new IllegalArgumentException("Numbers of source Raster bands and source color space " + "components do not match");
}
if (dest == null)
{
dest = CreateCompatibleDestRaster(src);
}
else
{
if (src.Height != dest.Height || src.Width != dest.Width)
{
throw new IllegalArgumentException("Width or height of Rasters do not match");
}
if (dest.NumBands != ProfileList[nProfiles - 1].NumComponents)
{
throw new IllegalArgumentException("Numbers of destination Raster bands and destination " + "color space components do not match");
}
}
/* make a new transform if needed */
if (ThisRasterTransform == null)
{
int i1, whichTrans, renderState;
ColorTransform[] theTransforms;
/* make the transform list */
theTransforms = new ColorTransform [nProfiles];
/* initialize transform get loop */
if (ProfileList[0].ProfileClass == ICC_Profile.CLASS_OUTPUT)
{
/* if first profile is a printer
* render as colorimetric */
renderState = ICC_Profile.IcRelativeColorimetric;
}
else
{
renderState = ICC_Profile.IcPerceptual; /* render any other
* class perceptually */
}
whichTrans = ColorTransform.In;
PCMM mdl = CMSManager.Module;
/* get the transforms from each profile */
for (i1 = 0; i1 < nProfiles; i1++)
{
if (i1 == nProfiles - 1) // last profile?
{
whichTrans = ColorTransform.Out; // get output transform
}
else // check for abstract profile
{
if ((whichTrans == ColorTransform.Simulation) && (ProfileList[i1].ProfileClass == ICC_Profile.CLASS_ABSTRACT))
{
renderState = ICC_Profile.IcPerceptual;
whichTrans = ColorTransform.In;
}
}
theTransforms[i1] = mdl.createTransform(ProfileList[i1], renderState, whichTrans);
/* get this profile's rendering intent to select transform
* from next profile */
renderState = GetRenderingIntent(ProfileList[i1]);
/* "middle" profiles use simulation transform */
whichTrans = ColorTransform.Simulation;
}
/* make the net transform */
ThisRasterTransform = mdl.createTransform(theTransforms);
}
int srcTransferType = src.TransferType;
int dstTransferType = dest.TransferType;
if ((srcTransferType == DataBuffer.TYPE_FLOAT) || (srcTransferType == DataBuffer.TYPE_DOUBLE) || (dstTransferType == DataBuffer.TYPE_FLOAT) || (dstTransferType == DataBuffer.TYPE_DOUBLE))
{
if (SrcMinVals == null)
{
GetMinMaxValsFromProfiles(ProfileList[0], ProfileList[nProfiles - 1]);
}
/* color convert the raster */
ThisRasterTransform.colorConvert(src, dest, SrcMinVals, SrcMaxVals, DstMinVals, DstMaxVals);
}
else
{
/* color convert the raster */
ThisRasterTransform.colorConvert(src, dest);
}
return(dest);
}
/// <summary>
/// Returns a <code>Raster</code> representing the alpha channel of an
/// image, extracted from the input <code>Raster</code>, provided that
/// pixel values of this <code>ColorModel</code> represent color and
/// alpha information as separate spatial bands (e.g.
/// </summary>
public WritableRaster getAlphaRaster(WritableRaster @raster)
{
return(default(WritableRaster));
}
/// <summary>
/// Returns a <code>Raster</code> representing the alpha channel of an
/// image, extracted from the input <code>Raster</code>, provided that
/// pixel values of this <code>ColorModel</code> represent color and
/// alpha information as separate spatial bands (e.g.
/// </summary>
public WritableRaster getAlphaRaster(WritableRaster @raster)
{
return default(WritableRaster);
}
/// <summary>
/// Constructs a new <code>BufferedImage</code> with a specified
/// <code>ColorModel</code> and <code>Raster</code>.
/// </summary>
public BufferedImage(ColorModel @cm, WritableRaster @raster, bool @isRasterPremultiplied, Hashtable @properties)
{
}
/// <summary>
/// Computes an arbitrary rectangular region of the
/// <code>BufferedImage</code> and copies it into a specified
/// <code>WritableRaster</code>.
/// </summary>
public WritableRaster copyData(WritableRaster @outRaster)
{
return(default(WritableRaster));
}
/// <summary>
/// Rescales the source BufferedImage.
/// If the color model in the source image is not the same as that
/// in the destination image, the pixels will be converted
/// in the destination. If the destination image is null,
/// a BufferedImage will be created with the source ColorModel.
/// An IllegalArgumentException may be thrown if the number of
/// scaling factors/offsets in this object does not meet the
/// restrictions stated in the class comments above, or if the
/// source image has an IndexColorModel. </summary>
/// <param name="src"> the <code>BufferedImage</code> to be filtered </param>
/// <param name="dst"> the destination for the filtering operation
/// or <code>null</code> </param>
/// <returns> the filtered <code>BufferedImage</code>. </returns>
/// <exception cref="IllegalArgumentException"> if the <code>ColorModel</code>
/// of <code>src</code> is an <code>IndexColorModel</code>,
/// or if the number of scaling factors and offsets in this
/// <code>RescaleOp</code> do not meet the requirements
/// stated in the class comments. </exception>
public BufferedImage Filter(BufferedImage src, BufferedImage dst)
{
ColorModel srcCM = src.ColorModel;
ColorModel dstCM;
int numBands = srcCM.NumColorComponents;
if (srcCM is IndexColorModel)
{
throw new IllegalArgumentException("Rescaling cannot be " + "performed on an indexed image");
}
if (Length != 1 && Length != numBands && Length != srcCM.NumComponents)
{
throw new IllegalArgumentException("Number of scaling constants " + "does not equal the number of" + " of color or color/alpha " + " components");
}
bool needToConvert = false;
// Include alpha
if (Length > numBands && srcCM.HasAlpha())
{
Length = numBands + 1;
}
int width = src.Width;
int height = src.Height;
if (dst == null)
{
dst = CreateCompatibleDestImage(src, null);
dstCM = srcCM;
}
else
{
if (width != dst.Width)
{
throw new IllegalArgumentException("Src width (" + width + ") not equal to dst width (" + dst.Width + ")");
}
if (height != dst.Height)
{
throw new IllegalArgumentException("Src height (" + height + ") not equal to dst height (" + dst.Height + ")");
}
dstCM = dst.ColorModel;
if (srcCM.ColorSpace.Type != dstCM.ColorSpace.Type)
{
needToConvert = true;
dst = CreateCompatibleDestImage(src, null);
}
}
BufferedImage origDst = dst;
//
// Try to use a native BI rescale operation first
//
if (ImagingLib.filter(this, src, dst) == null)
{
//
// Native BI rescale failed - convert to rasters
//
WritableRaster srcRaster = src.Raster;
WritableRaster dstRaster = dst.Raster;
if (srcCM.HasAlpha())
{
if (numBands - 1 == Length || Length == 1)
{
int minx = srcRaster.MinX;
int miny = srcRaster.MinY;
int[] bands = new int[numBands - 1];
for (int i = 0; i < numBands - 1; i++)
{
bands[i] = i;
}
srcRaster = srcRaster.CreateWritableChild(minx, miny, srcRaster.Width, srcRaster.Height, minx, miny, bands);
}
}
if (dstCM.HasAlpha())
{
int dstNumBands = dstRaster.NumBands;
if (dstNumBands - 1 == Length || Length == 1)
{
int minx = dstRaster.MinX;
int miny = dstRaster.MinY;
int[] bands = new int[numBands - 1];
for (int i = 0; i < numBands - 1; i++)
{
bands[i] = i;
}
dstRaster = dstRaster.CreateWritableChild(minx, miny, dstRaster.Width, dstRaster.Height, minx, miny, bands);
}
}
//
// Call the raster filter method
//
Filter(srcRaster, dstRaster);
}
if (needToConvert)
{
// ColorModels are not the same
ColorConvertOp ccop = new ColorConvertOp(Hints);
ccop.Filter(dst, origDst);
}
return(origDst);
}
/// <summary>
/// Constructs a new <code>BufferedImage</code> with a specified
/// <code>ColorModel</code> and <code>Raster</code>.
/// </summary>
public BufferedImage(ColorModel @cm, WritableRaster @raster, bool @isRasterPremultiplied, Hashtable @properties)
{
}
/// <summary>
/// Transforms the <CODE>Raster</CODE> using the matrix specified in the
/// constructor. An <CODE>IllegalArgumentException</CODE> may be thrown if
/// the number of bands in the source or destination is incompatible with
/// the matrix. See the class comments for more details.
/// <para>
/// If the destination is null, it will be created with a number of bands
/// equalling the number of rows in the matrix. No exception is thrown
/// if the operation causes a data overflow.
///
/// </para>
/// </summary>
/// <param name="src"> The <CODE>Raster</CODE> to be filtered. </param>
/// <param name="dst"> The <CODE>Raster</CODE> in which to store the results
/// of the filter operation.
/// </param>
/// <returns> The filtered <CODE>Raster</CODE>.
/// </returns>
/// <exception cref="IllegalArgumentException"> If the number of bands in the
/// source or destination is incompatible with the matrix. </exception>
public virtual WritableRaster Filter(Raster src, WritableRaster dst)
{
int nBands = src.NumBands;
if (Ncols != nBands && Ncols != (nBands + 1))
{
throw new IllegalArgumentException("Number of columns in the " + "matrix (" + Ncols + ") must be equal to the number" + " of bands ([+1]) in src (" + nBands + ").");
}
if (dst == null)
{
dst = CreateCompatibleDestRaster(src);
}
else if (Nrows != dst.NumBands)
{
throw new IllegalArgumentException("Number of rows in the " + "matrix (" + Nrows + ") must be equal to the number" + " of bands ([+1]) in dst (" + nBands + ").");
}
if (ImagingLib.filter(this, src, dst) != null)
{
return(dst);
}
int[] pixel = null;
int[] dstPixel = new int[dst.NumBands];
float accum;
int sminX = src.MinX;
int sY = src.MinY;
int dminX = dst.MinX;
int dY = dst.MinY;
int sX;
int dX;
if (Ncols == nBands)
{
for (int y = 0; y < src.Height; y++, sY++, dY++)
{
dX = dminX;
sX = sminX;
for (int x = 0; x < src.Width; x++, sX++, dX++)
{
pixel = src.GetPixel(sX, sY, pixel);
for (int r = 0; r < Nrows; r++)
{
accum = 0.0f;
for (int c = 0; c < Ncols; c++)
{
accum += Matrix_Renamed[r][c] * pixel[c];
}
dstPixel[r] = (int)accum;
}
dst.SetPixel(dX, dY, dstPixel);
}
}
}
else
{
// Need to add constant
for (int y = 0; y < src.Height; y++, sY++, dY++)
{
dX = dminX;
sX = sminX;
for (int x = 0; x < src.Width; x++, sX++, dX++)
{
pixel = src.GetPixel(sX, sY, pixel);
for (int r = 0; r < Nrows; r++)
{
accum = 0.0f;
for (int c = 0; c < nBands; c++)
{
accum += Matrix_Renamed[r][c] * pixel[c];
}
dstPixel[r] = (int)(accum + Matrix_Renamed[r][nBands]);
}
dst.SetPixel(dX, dY, dstPixel);
}
}
}
return(dst);
}
/// <summary>
/// Computes an arbitrary rectangular region of the
/// <code>BufferedImage</code> and copies it into a specified
/// <code>WritableRaster</code>.
/// </summary>
public WritableRaster copyData(WritableRaster @outRaster)
{
return default(WritableRaster);
}
/// <summary>
/// Forces the raster data to match the state specified in the
/// <code>isAlphaPremultiplied</code> variable, assuming the data is
/// currently correctly described by this <code>ColorModel</code>.
/// </summary>
public ColorModel coerceData(WritableRaster @raster, bool @isAlphaPremultiplied)
{
return(default(ColorModel));
}
/* color convert a Raster - handles byte, ushort, int, short, float,
* or double transferTypes */
private WritableRaster NonICCRasterFilter(Raster src, WritableRaster dst)
{
if (CSList.Length != 2)
{
throw new IllegalArgumentException("Destination ColorSpace is undefined");
}
if (src.NumBands != CSList[0].NumComponents)
{
throw new IllegalArgumentException("Numbers of source Raster bands and source color space " + "components do not match");
}
if (dst == null)
{
dst = CreateCompatibleDestRaster(src);
}
else
{
if (src.Height != dst.Height || src.Width != dst.Width)
{
throw new IllegalArgumentException("Width or height of Rasters do not match");
}
if (dst.NumBands != CSList[1].NumComponents)
{
throw new IllegalArgumentException("Numbers of destination Raster bands and destination " + "color space components do not match");
}
}
if (SrcMinVals == null)
{
GetMinMaxValsFromColorSpaces(CSList[0], CSList[1]);
}
SampleModel srcSM = src.SampleModel;
SampleModel dstSM = dst.SampleModel;
bool srcIsFloat, dstIsFloat;
int srcTransferType = src.TransferType;
int dstTransferType = dst.TransferType;
if ((srcTransferType == DataBuffer.TYPE_FLOAT) || (srcTransferType == DataBuffer.TYPE_DOUBLE))
{
srcIsFloat = true;
}
else
{
srcIsFloat = false;
}
if ((dstTransferType == DataBuffer.TYPE_FLOAT) || (dstTransferType == DataBuffer.TYPE_DOUBLE))
{
dstIsFloat = true;
}
else
{
dstIsFloat = false;
}
int w = src.Width;
int h = src.Height;
int srcNumBands = src.NumBands;
int dstNumBands = dst.NumBands;
float[] srcScaleFactor = null;
float[] dstScaleFactor = null;
if (!srcIsFloat)
{
srcScaleFactor = new float[srcNumBands];
for (int i = 0; i < srcNumBands; i++)
{
if (srcTransferType == DataBuffer.TYPE_SHORT)
{
srcScaleFactor[i] = (SrcMaxVals[i] - SrcMinVals[i]) / 32767.0f;
}
else
{
srcScaleFactor[i] = (SrcMaxVals[i] - SrcMinVals[i]) / ((float)((1 << srcSM.GetSampleSize(i)) - 1));
}
}
}
if (!dstIsFloat)
{
dstScaleFactor = new float[dstNumBands];
for (int i = 0; i < dstNumBands; i++)
{
if (dstTransferType == DataBuffer.TYPE_SHORT)
{
dstScaleFactor[i] = 32767.0f / (DstMaxVals[i] - DstMinVals[i]);
}
else
{
dstScaleFactor[i] = ((float)((1 << dstSM.GetSampleSize(i)) - 1)) / (DstMaxVals[i] - DstMinVals[i]);
}
}
}
int ys = src.MinY;
int yd = dst.MinY;
int xs, xd;
float sample;
float[] color = new float[srcNumBands];
float[] tmpColor;
ColorSpace srcColorSpace = CSList[0];
ColorSpace dstColorSpace = CSList[1];
// process each pixel
for (int y = 0; y < h; y++, ys++, yd++)
{
// get src scanline
xs = src.MinX;
xd = dst.MinX;
for (int x = 0; x < w; x++, xs++, xd++)
{
for (int i = 0; i < srcNumBands; i++)
{
sample = src.GetSampleFloat(xs, ys, i);
if (!srcIsFloat)
{
sample = sample * srcScaleFactor[i] + SrcMinVals[i];
}
color[i] = sample;
}
tmpColor = srcColorSpace.ToCIEXYZ(color);
tmpColor = dstColorSpace.FromCIEXYZ(tmpColor);
for (int i = 0; i < dstNumBands; i++)
{
sample = tmpColor[i];
if (!dstIsFloat)
{
sample = (sample - DstMinVals[i]) * dstScaleFactor[i];
}
dst.SetSample(xd, yd, i, sample);
}
}
}
return(dst);
}
/// <summary>
/// Transforms the source <CODE>BufferedImage</CODE> and stores the results
/// in the destination <CODE>BufferedImage</CODE>.
/// If the color models for the two images do not match, a color
/// conversion into the destination color model is performed.
/// If the destination image is null,
/// a <CODE>BufferedImage</CODE> is created with the source
/// <CODE>ColorModel</CODE>.
/// <para>
/// The coordinates of the rectangle returned by
/// <code>getBounds2D(BufferedImage)</code>
/// are not necessarily the same as the coordinates of the
/// <code>BufferedImage</code> returned by this method. If the
/// upper-left corner coordinates of the rectangle are
/// negative then this part of the rectangle is not drawn. If the
/// upper-left corner coordinates of the rectangle are positive
/// then the filtered image is drawn at that position in the
/// destination <code>BufferedImage</code>.
/// </para>
/// <para>
/// An <CODE>IllegalArgumentException</CODE> is thrown if the source is
/// the same as the destination.
///
/// </para>
/// </summary>
/// <param name="src"> The <CODE>BufferedImage</CODE> to transform. </param>
/// <param name="dst"> The <CODE>BufferedImage</CODE> in which to store the results
/// of the transformation.
/// </param>
/// <returns> The filtered <CODE>BufferedImage</CODE>. </returns>
/// <exception cref="IllegalArgumentException"> if <code>src</code> and
/// <code>dst</code> are the same </exception>
/// <exception cref="ImagingOpException"> if the image cannot be transformed
/// because of a data-processing error that might be
/// caused by an invalid image format, tile format, or
/// image-processing operation, or any other unsupported
/// operation. </exception>
public BufferedImage Filter(BufferedImage src, BufferedImage dst)
{
if (src == null)
{
throw new NullPointerException("src image is null");
}
if (src == dst)
{
throw new IllegalArgumentException("src image cannot be the " + "same as the dst image");
}
bool needToConvert = false;
ColorModel srcCM = src.ColorModel;
ColorModel dstCM;
BufferedImage origDst = dst;
if (dst == null)
{
dst = CreateCompatibleDestImage(src, null);
dstCM = srcCM;
origDst = dst;
}
else
{
dstCM = dst.ColorModel;
if (srcCM.ColorSpace.Type != dstCM.ColorSpace.Type)
{
int type = Xform.Type;
bool needTrans = ((type & (Xform.TYPE_MASK_ROTATION | Xform.TYPE_GENERAL_TRANSFORM)) != 0);
if (!needTrans && type != Xform.TYPE_TRANSLATION && type != Xform.TYPE_IDENTITY)
{
double[] mtx = new double[4];
Xform.GetMatrix(mtx);
// Check out the matrix. A non-integral scale will force ARGB
// since the edge conditions can't be guaranteed.
needTrans = (mtx[0] != (int)mtx[0] || mtx[3] != (int)mtx[3]);
}
if (needTrans && srcCM.Transparency == java.awt.Transparency_Fields.OPAQUE)
{
// Need to convert first
ColorConvertOp ccop = new ColorConvertOp(Hints);
BufferedImage tmpSrc = null;
int sw = src.Width;
int sh = src.Height;
if (dstCM.Transparency == java.awt.Transparency_Fields.OPAQUE)
{
tmpSrc = new BufferedImage(sw, sh, BufferedImage.TYPE_INT_ARGB);
}
else
{
WritableRaster r = dstCM.CreateCompatibleWritableRaster(sw, sh);
tmpSrc = new BufferedImage(dstCM, r, dstCM.AlphaPremultiplied, null);
}
src = ccop.Filter(src, tmpSrc);
}
else
{
needToConvert = true;
dst = CreateCompatibleDestImage(src, null);
}
}
}
if (InterpolationType_Renamed != TYPE_NEAREST_NEIGHBOR && dst.ColorModel is IndexColorModel)
{
dst = new BufferedImage(dst.Width, dst.Height, BufferedImage.TYPE_INT_ARGB);
}
if (ImagingLib.filter(this, src, dst) == null)
{
throw new ImagingOpException("Unable to transform src image");
}
if (needToConvert)
{
ColorConvertOp ccop = new ColorConvertOp(Hints);
ccop.Filter(dst, origDst);
}
else if (origDst != dst)
{
java.awt.Graphics2D g = origDst.CreateGraphics();
try
{
g.Composite = AlphaComposite.Src;
g.DrawImage(dst, 0, 0, null);
}
finally
{
g.Dispose();
}
}
return(origDst);
}
/// <summary>
/// Rescales the pixel data in the source Raster.
/// If the destination Raster is null, a new Raster will be created.
/// The source and destination must have the same number of bands.
/// Otherwise, an IllegalArgumentException is thrown.
/// Note that the number of scaling factors/offsets in this object must
/// meet the restrictions stated in the class comments above.
/// Otherwise, an IllegalArgumentException is thrown. </summary>
/// <param name="src"> the <code>Raster</code> to be filtered </param>
/// <param name="dst"> the destination for the filtering operation
/// or <code>null</code> </param>
/// <returns> the filtered <code>WritableRaster</code>. </returns>
/// <exception cref="IllegalArgumentException"> if <code>src</code> and
/// <code>dst</code> do not have the same number of bands,
/// or if the number of scaling factors and offsets in this
/// <code>RescaleOp</code> do not meet the requirements
/// stated in the class comments. </exception>
public WritableRaster Filter(Raster src, WritableRaster dst)
{
int numBands = src.NumBands;
int width = src.Width;
int height = src.Height;
int[] srcPix = null;
int step = 0;
int tidx = 0;
// Create a new destination Raster, if needed
if (dst == null)
{
dst = CreateCompatibleDestRaster(src);
}
else if (height != dst.Height || width != dst.Width)
{
throw new IllegalArgumentException("Width or height of Rasters do not " + "match");
}
else if (numBands != dst.NumBands)
{
// Make sure that the number of bands are equal
throw new IllegalArgumentException("Number of bands in src " + numBands + " does not equal number of bands in dest " + dst.NumBands);
}
// Make sure that the arrays match
// Make sure that the low/high/constant arrays match
if (Length != 1 && Length != src.NumBands)
{
throw new IllegalArgumentException("Number of scaling constants " + "does not equal the number of" + " of bands in the src raster");
}
//
// Try for a native raster rescale first
//
if (ImagingLib.filter(this, src, dst) != null)
{
return(dst);
}
//
// Native raster rescale failed.
// Try to see if a lookup operation can be used
//
if (CanUseLookup(src, dst))
{
int srcNgray = (1 << SrcNbits);
int dstNgray = (1 << DstNbits);
if (dstNgray == 256)
{
ByteLookupTable lut = CreateByteLut(ScaleFactors, Offsets, numBands, srcNgray);
LookupOp op = new LookupOp(lut, Hints);
op.Filter(src, dst);
}
else
{
ShortLookupTable lut = CreateShortLut(ScaleFactors, Offsets, numBands, srcNgray);
LookupOp op = new LookupOp(lut, Hints);
op.Filter(src, dst);
}
}
else
{
//
// Fall back to the slow code
//
if (Length > 1)
{
step = 1;
}
int sminX = src.MinX;
int sY = src.MinY;
int dminX = dst.MinX;
int dY = dst.MinY;
int sX;
int dX;
//
// Determine bits per band to determine maxval for clamps.
// The min is assumed to be zero.
// REMIND: This must change if we ever support signed data types.
//
int nbits;
int[] dstMax = new int[numBands];
int[] dstMask = new int[numBands];
SampleModel dstSM = dst.SampleModel;
for (int z = 0; z < numBands; z++)
{
nbits = dstSM.GetSampleSize(z);
dstMax[z] = (1 << nbits) - 1;
dstMask[z] = ~(dstMax[z]);
}
int val;
for (int y = 0; y < height; y++, sY++, dY++)
{
dX = dminX;
sX = sminX;
for (int x = 0; x < width; x++, sX++, dX++)
{
// Get data for all bands at this x,y position
srcPix = src.GetPixel(sX, sY, srcPix);
tidx = 0;
for (int z = 0; z < numBands; z++, tidx += step)
{
val = (int)(srcPix[z] * ScaleFactors[tidx] + Offsets[tidx]);
// Clamp
if ((val & dstMask[z]) != 0)
{
if (val < 0)
{
val = 0;
}
else
{
val = dstMax[z];
}
}
srcPix[z] = val;
}
// Put it back for all bands
dst.SetPixel(dX, dY, srcPix);
}
}
}
return(dst);
}
/// <summary>
/// Constructs a WritableRaster with the given SampleModel, DataBuffer,
/// and parent.
/// </summary>
public WritableRaster(SampleModel @sampleModel, DataBuffer @dataBuffer, Rectangle @aRegion, Point @sampleModelTranslate, WritableRaster @parent)
: base(sampleModel, null)
{
}
/// <summary>
/// Forces the raster data to match the state specified in the
/// <code>isAlphaPremultiplied</code> variable, assuming the data is
/// currently correctly described by this <code>ColorModel</code>.
/// </summary>
public ColorModel coerceData(WritableRaster @raster, bool @isAlphaPremultiplied)
{
return default(ColorModel);
}