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-rw-r--r--awt/org/apache/harmony/awt/gl/color/ColorScaler.java355
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diff --git a/awt/org/apache/harmony/awt/gl/color/ColorScaler.java b/awt/org/apache/harmony/awt/gl/color/ColorScaler.java
deleted file mode 100644
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--- a/awt/org/apache/harmony/awt/gl/color/ColorScaler.java
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@@ -1,355 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/**
- * @author Oleg V. Khaschansky
- * @version $Revision$
- */
-package org.apache.harmony.awt.gl.color;
-
-import java.awt.color.ColorSpace;
-import java.awt.color.ICC_Profile;
-import java.awt.image.DataBuffer;
-import java.awt.image.Raster;
-import java.awt.image.SampleModel;
-import java.awt.image.WritableRaster;
-
-/**
- * This class provides functionality for scaling color data when
- * ranges of the source and destination color values differs.
- */
-public class ColorScaler {
- private static final float MAX_SHORT = 0xFFFF;
- private static final float MAX_SIGNED_SHORT = 0x7FFF;
-
- private static final float MAX_XYZ = 1f + (32767f/32768f);
-
- // Cached values for scaling color data
- private float[] channelMinValues = null;
- private float[] channelMulipliers = null; // for scale
- private float[] invChannelMulipliers = null; // for unscale
-
- int nColorChannels = 0;
-
- // For scaling rasters, false if transfer type is double or float
- boolean isTTypeIntegral = false;
-
- /**
- * Loads scaling data for raster. Note, if profile pf is null,
- * for non-integral data types multipliers are not initialized.
- * @param r - raster
- * @param pf - profile which helps to determine the ranges of the color data
- */
- public void loadScalingData(Raster r, ICC_Profile pf) {
- boolean isSrcTTypeIntegral =
- r.getTransferType() != DataBuffer.TYPE_FLOAT &&
- r.getTransferType() != DataBuffer.TYPE_DOUBLE;
- if (isSrcTTypeIntegral)
- loadScalingData(r.getSampleModel());
- else if (pf != null)
- loadScalingData(pf);
- }
-
- /**
- * Use this method only for integral transfer types.
- * Extracts min/max values from the sample model
- * @param sm - sample model
- */
- public void loadScalingData(SampleModel sm) {
- // Supposing integral transfer type
- isTTypeIntegral = true;
-
- nColorChannels = sm.getNumBands();
-
- channelMinValues = new float[nColorChannels];
- channelMulipliers = new float[nColorChannels];
- invChannelMulipliers = new float[nColorChannels];
-
- boolean isSignedShort =
- (sm.getTransferType() == DataBuffer.TYPE_SHORT);
-
- float maxVal;
- for (int i=0; i<nColorChannels; i++) {
- channelMinValues[i] = 0;
- if (isSignedShort) {
- channelMulipliers[i] = MAX_SHORT / MAX_SIGNED_SHORT;
- invChannelMulipliers[i] = MAX_SIGNED_SHORT / MAX_SHORT;
- } else {
- maxVal = ((1 << sm.getSampleSize(i)) - 1);
- channelMulipliers[i] = MAX_SHORT / maxVal;
- invChannelMulipliers[i] = maxVal / MAX_SHORT;
- }
- }
- }
-
- /**
- * Use this method only for double of float transfer types.
- * Extracts scaling data from the color space signature
- * and other tags, stored in the profile
- * @param pf - ICC profile
- */
- public void loadScalingData(ICC_Profile pf) {
- // Supposing double or float transfer type
- isTTypeIntegral = false;
-
- nColorChannels = pf.getNumComponents();
-
- // Get min/max values directly from the profile
- // Very much like fillMinMaxValues in ICC_ColorSpace
- float maxValues[] = new float[nColorChannels];
- float minValues[] = new float[nColorChannels];
-
- switch (pf.getColorSpaceType()) {
- case ColorSpace.TYPE_XYZ:
- minValues[0] = 0;
- minValues[1] = 0;
- minValues[2] = 0;
- maxValues[0] = MAX_XYZ;
- maxValues[1] = MAX_XYZ;
- maxValues[2] = MAX_XYZ;
- break;
- case ColorSpace.TYPE_Lab:
- minValues[0] = 0;
- minValues[1] = -128;
- minValues[2] = -128;
- maxValues[0] = 100;
- maxValues[1] = 127;
- maxValues[2] = 127;
- break;
- default:
- for (int i=0; i<nColorChannels; i++) {
- minValues[i] = 0;
- maxValues[i] = 1;
- }
- }
-
- channelMinValues = minValues;
- channelMulipliers = new float[nColorChannels];
- invChannelMulipliers = new float[nColorChannels];
-
- for (int i = 0; i < nColorChannels; i++) {
- channelMulipliers[i] =
- MAX_SHORT / (maxValues[i] - channelMinValues[i]);
-
- invChannelMulipliers[i] =
- (maxValues[i] - channelMinValues[i]) / MAX_SHORT;
- }
- }
-
- /**
- * Extracts scaling data from the color space
- * @param cs - color space
- */
- public void loadScalingData(ColorSpace cs) {
- nColorChannels = cs.getNumComponents();
-
- channelMinValues = new float[nColorChannels];
- channelMulipliers = new float[nColorChannels];
- invChannelMulipliers = new float[nColorChannels];
-
- for (int i = 0; i < nColorChannels; i++) {
- channelMinValues[i] = cs.getMinValue(i);
-
- channelMulipliers[i] =
- MAX_SHORT / (cs.getMaxValue(i) - channelMinValues[i]);
-
- invChannelMulipliers[i] =
- (cs.getMaxValue(i) - channelMinValues[i]) / MAX_SHORT;
- }
- }
-
- /**
- * Scales and normalizes the whole raster and returns the result
- * in the float array
- * @param r - source raster
- * @return scaled and normalized raster data
- */
- public float[][] scaleNormalize(Raster r) {
- int width = r.getWidth();
- int height = r.getHeight();
- float result[][] = new float[width*height][nColorChannels];
- float normMultipliers[] = new float[nColorChannels];
-
- int pos = 0;
- if (isTTypeIntegral) {
- // Change max value from MAX_SHORT to 1f
- for (int i=0; i<nColorChannels; i++) {
- normMultipliers[i] = channelMulipliers[i] / MAX_SHORT;
- }
-
- int sample;
- for (int row=r.getMinX(); row<width; row++) {
- for (int col=r.getMinY(); col<height; col++) {
- for (int chan = 0; chan < nColorChannels; chan++) {
- sample = r.getSample(row, col, chan);
- result[pos][chan] = (sample * normMultipliers[chan]);
- }
- pos++;
- }
- }
- } else { // Just get the samples...
- for (int row=r.getMinX(); row<width; row++) {
- for (int col=r.getMinY(); col<height; col++) {
- for (int chan = 0; chan < nColorChannels; chan++) {
- result[pos][chan] = r.getSampleFloat(row, col, chan);
- }
- pos++;
- }
- }
- }
- return result;
- }
-
- /**
- * Unscale the whole float array and put the result
- * in the raster
- * @param r - destination raster
- * @param data - input pixels
- */
- public void unscaleNormalized(WritableRaster r, float data[][]) {
- int width = r.getWidth();
- int height = r.getHeight();
- float normMultipliers[] = new float[nColorChannels];
-
- int pos = 0;
- if (isTTypeIntegral) {
- // Change max value from MAX_SHORT to 1f
- for (int i=0; i<nColorChannels; i++) {
- normMultipliers[i] = invChannelMulipliers[i] * MAX_SHORT;
- }
-
- int sample;
- for (int row=r.getMinX(); row<width; row++) {
- for (int col=r.getMinY(); col<height; col++) {
- for (int chan = 0; chan < nColorChannels; chan++) {
- sample = (int) (data[pos][chan] * normMultipliers[chan] + 0.5f);
- r.setSample(row, col, chan, sample);
- }
- pos++;
- }
- }
- } else { // Just set the samples...
- for (int row=r.getMinX(); row<width; row++) {
- for (int col=r.getMinY(); col<height; col++) {
- for (int chan = 0; chan < nColorChannels; chan++) {
- r.setSample(row, col, chan, data[pos][chan]);
- }
- pos++;
- }
- }
- }
- }
-
- /**
- * Scales the whole raster to short and returns the result
- * in the array
- * @param r - source raster
- * @return scaled and normalized raster data
- */
- public short[] scale(Raster r) {
- int width = r.getWidth();
- int height = r.getHeight();
- short result[] = new short[width*height*nColorChannels];
-
- int pos = 0;
- if (isTTypeIntegral) {
- int sample;
- for (int row=r.getMinX(); row<width; row++) {
- for (int col=r.getMinY(); col<height; col++) {
- for (int chan = 0; chan < nColorChannels; chan++) {
- sample = r.getSample(row, col, chan);
- result[pos++] =
- (short) (sample * channelMulipliers[chan] + 0.5f);
- }
- }
- }
- } else {
- float sample;
- for (int row=r.getMinX(); row<width; row++) {
- for (int col=r.getMinY(); col<height; col++) {
- for (int chan = 0; chan < nColorChannels; chan++) {
- sample = r.getSampleFloat(row, col, chan);
- result[pos++] = (short) ((sample - channelMinValues[chan])
- * channelMulipliers[chan] + 0.5f);
- }
- }
- }
- }
- return result;
- }
-
- /**
- * Unscales the whole data array and puts obtained values to the raster
- * @param data - input data
- * @param wr - destination raster
- */
- public void unscale(short[] data, WritableRaster wr) {
- int width = wr.getWidth();
- int height = wr.getHeight();
-
- int pos = 0;
- if (isTTypeIntegral) {
- int sample;
- for (int row=wr.getMinX(); row<width; row++) {
- for (int col=wr.getMinY(); col<height; col++) {
- for (int chan = 0; chan < nColorChannels; chan++) {
- sample = (int) ((data[pos++] & 0xFFFF) *
- invChannelMulipliers[chan] + 0.5f);
- wr.setSample(row, col, chan, sample);
- }
- }
- }
- } else {
- float sample;
- for (int row=wr.getMinX(); row<width; row++) {
- for (int col=wr.getMinY(); col<height; col++) {
- for (int chan = 0; chan < nColorChannels; chan++) {
- sample = (data[pos++] & 0xFFFF) *
- invChannelMulipliers[chan] + channelMinValues[chan];
- wr.setSample(row, col, chan, sample);
- }
- }
- }
- }
- }
-
- /**
- * Scales one pixel and puts obtained values to the chanData
- * @param pixelData - input pixel
- * @param chanData - output buffer
- * @param chanDataOffset - output buffer offset
- */
- public void scale(float[] pixelData, short[] chanData, int chanDataOffset) {
- for (int chan = 0; chan < nColorChannels; chan++) {
- chanData[chanDataOffset + chan] =
- (short) ((pixelData[chan] - channelMinValues[chan]) *
- channelMulipliers[chan] + 0.5f);
- }
- }
-
- /**
- * Unscales one pixel and puts obtained values to the pixelData
- * @param pixelData - output pixel
- * @param chanData - input buffer
- * @param chanDataOffset - input buffer offset
- */
- public void unscale(float[] pixelData, short[] chanData, int chanDataOffset) {
- for (int chan = 0; chan < nColorChannels; chan++) {
- pixelData[chan] = (chanData[chanDataOffset + chan] & 0xFFFF)
- * invChannelMulipliers[chan] + channelMinValues[chan];
- }
- }
-} \ No newline at end of file
generated by cgit v1.1 at 2024-06-07 23:21:25 +0000