diff options
Diffstat (limited to 'gnu/java/awt/color/ColorLookUpTable.java')
| -rw-r--r-- | gnu/java/awt/color/ColorLookUpTable.java | 226 |
1 files changed, 113 insertions, 113 deletions
diff --git a/gnu/java/awt/color/ColorLookUpTable.java b/gnu/java/awt/color/ColorLookUpTable.java index 6b6418bc2..581320c3e 100644 --- a/gnu/java/awt/color/ColorLookUpTable.java +++ b/gnu/java/awt/color/ColorLookUpTable.java @@ -77,7 +77,7 @@ public class ColorLookUpTable float[][] inMatrix; // input matrix (XYZ only) boolean useMatrix; // Whether to use the matrix or not. int[] multiplier; - int[] offsets; // Hypercube offsets + int[] offsets; // Hypercube offsets boolean inputLab; // Set if the CLUT input CS is Lab boolean outputLab; // Set if the CLUT output CS is Lab @@ -95,21 +95,21 @@ public class ColorLookUpTable case ICC_Profile.icSigAToB0Tag: case ICC_Profile.icSigAToB1Tag: case ICC_Profile.icSigAToB2Tag: - if (profile.getColorSpaceType() == ColorSpace.TYPE_XYZ) - useMatrix = true; - inputLab = false; - outputLab = (profile.getPCSType() == ColorSpace.TYPE_Lab); - break; + if (profile.getColorSpaceType() == ColorSpace.TYPE_XYZ) + useMatrix = true; + inputLab = false; + outputLab = (profile.getPCSType() == ColorSpace.TYPE_Lab); + break; case ICC_Profile.icSigBToA0Tag: case ICC_Profile.icSigBToA1Tag: case ICC_Profile.icSigBToA2Tag: - if (profile.getPCSType() == ColorSpace.TYPE_XYZ) - useMatrix = true; - inputLab = (profile.getPCSType() == ColorSpace.TYPE_Lab); - outputLab = false; - break; + if (profile.getPCSType() == ColorSpace.TYPE_XYZ) + useMatrix = true; + inputLab = (profile.getPCSType() == ColorSpace.TYPE_Lab); + outputLab = false; + break; default: - throw new IllegalArgumentException("Not a clut-type tag."); + throw new IllegalArgumentException("Not a clut-type tag."); } byte[] data = profile.getData(tag); @@ -144,24 +144,24 @@ public class ColorLookUpTable inMatrix = new float[3][3]; for (int i = 0; i < 3; i++) for (int j = 0; j < 3; j++) - inMatrix[i][j] = ((float) (buf.getInt(12 + (i * 3 + j) * 4))) / 65536.0f; + inMatrix[i][j] = ((float) (buf.getInt(12 + (i * 3 + j) * 4))) / 65536.0f; inTable = new double[nIn][nInTableEntries]; for (int channel = 0; channel < nIn; channel++) for (int i = 0; i < nInTableEntries; i++) - inTable[channel][i] = (double) ((int) buf.getShort(52 - + (channel * nInTableEntries - + i) * 2) - & (0xFFFF)) / 65536.0; + inTable[channel][i] = (double) ((int) buf.getShort(52 + + (channel * nInTableEntries + + i) * 2) + & (0xFFFF)) / 65536.0; nClut = nOut; multiplier = new int[nIn]; multiplier[nIn - 1] = nOut; for (int i = 0; i < nIn; i++) { - nClut *= gridpoints; - if (i > 0) - multiplier[nIn - i - 1] = multiplier[nIn - i] * gridpoints; + nClut *= gridpoints; + if (i > 0) + multiplier[nIn - i - 1] = multiplier[nIn - i] * gridpoints; } int clutOffset = 52 + nIn * nInTableEntries * 2; @@ -172,18 +172,18 @@ public class ColorLookUpTable outTable = new short[nOut][nOutTableEntries]; for (int channel = 0; channel < nOut; channel++) for (int i = 0; i < nOutTableEntries; i++) - outTable[channel][i] = buf.getShort(clutOffset - + (nClut - + channel * nOutTableEntries + i) * 2); + outTable[channel][i] = buf.getShort(clutOffset + + (nClut + + channel * nOutTableEntries + i) * 2); // calculate the hypercube corner offsets offsets = new int[(1 << nIn)]; offsets[0] = 0; for (int j = 0; j < nIn; j++) { - int factor = 1 << j; - for (int i = 0; i < factor; i++) - offsets[factor + i] = offsets[i] + multiplier[j]; + int factor = 1 << j; + for (int i = 0; i < factor; i++) + offsets[factor + i] = offsets[i] + multiplier[j]; } } @@ -203,23 +203,23 @@ public class ColorLookUpTable inMatrix = new float[3][3]; for (int i = 0; i < 3; i++) for (int j = 0; j < 3; j++) - inMatrix[i][j] = ((float) (buf.getInt(12 + (i * 3 + j) * 4))) / 65536.0f; + inMatrix[i][j] = ((float) (buf.getInt(12 + (i * 3 + j) * 4))) / 65536.0f; inTable = new double[nIn][nInTableEntries]; for (int channel = 0; channel < nIn; channel++) for (int i = 0; i < nInTableEntries; i++) - inTable[channel][i] = (double) ((int) buf.get(48 - + (channel * nInTableEntries - + i)) & (0xFF)) / 255.0; + inTable[channel][i] = (double) ((int) buf.get(48 + + (channel * nInTableEntries + + i)) & (0xFF)) / 255.0; nClut = nOut; multiplier = new int[nIn]; multiplier[nIn - 1] = nOut; for (int i = 0; i < nIn; i++) { - nClut *= gridpoints; - if (i > 0) - multiplier[nIn - i - 1] = multiplier[nIn - i] * gridpoints; + nClut *= gridpoints; + if (i > 0) + multiplier[nIn - i - 1] = multiplier[nIn - i] * gridpoints; } int clutOffset = 48 + nIn * nInTableEntries; @@ -230,18 +230,18 @@ public class ColorLookUpTable outTable = new short[nOut][nOutTableEntries]; for (int channel = 0; channel < nOut; channel++) for (int i = 0; i < nOutTableEntries; i++) - outTable[channel][i] = (short) (buf.get(clutOffset + nClut - + channel * nOutTableEntries - + i) * 257); + outTable[channel][i] = (short) (buf.get(clutOffset + nClut + + channel * nOutTableEntries + + i) * 257); // calculate the hypercube corner offsets offsets = new int[(1 << nIn)]; offsets[0] = 0; for (int j = 0; j < nIn; j++) { - int factor = 1 << j; - for (int i = 0; i < factor; i++) - offsets[factor + i] = offsets[i] + multiplier[j]; + int factor = 1 << j; + for (int i = 0; i < factor; i++) + offsets[factor + i] = offsets[i] + multiplier[j]; } } @@ -260,32 +260,32 @@ public class ColorLookUpTable float[] in2 = new float[in.length]; if (useMatrix) { - for (int i = 0; i < 3; i++) - in2[i] = in[0] * inMatrix[i][0] + in[1] * inMatrix[i][1] - + in[2] * inMatrix[i][2]; + for (int i = 0; i < 3; i++) + in2[i] = in[0] * inMatrix[i][0] + in[1] * inMatrix[i][1] + + in[2] * inMatrix[i][2]; } else if (inputLab) in2 = XYZtoLab(in); else System.arraycopy(in, 0, in2, 0, in.length); - // input table + // input table for (int i = 0; i < nIn; i++) { - int index = (int) Math.floor(in2[i] * (double) (nInTableEntries - 1)); // floor in - - // clip values. - if (index >= nInTableEntries - 1) - in2[i] = (float) inTable[i][nInTableEntries - 1]; - else if (index < 0) - in2[i] = (float) inTable[i][0]; - else - { - // linear interpolation - double alpha = in2[i] * ((double) nInTableEntries - 1.0) - index; - in2[i] = (float) (inTable[i][index] * (1 - alpha) - + inTable[i][index + 1] * alpha); - } + int index = (int) Math.floor(in2[i] * (double) (nInTableEntries - 1)); // floor in + + // clip values. + if (index >= nInTableEntries - 1) + in2[i] = (float) inTable[i][nInTableEntries - 1]; + else if (index < 0) + in2[i] = (float) inTable[i][0]; + else + { + // linear interpolation + double alpha = in2[i] * ((double) nInTableEntries - 1.0) - index; + in2[i] = (float) (inTable[i][index] * (1 - alpha) + + inTable[i][index + 1] * alpha); + } } // CLUT lookup @@ -295,31 +295,31 @@ public class ColorLookUpTable int offset = 0; // = gp for (int i = 0; i < nIn; i++) { - int index = (int) Math.floor(in2[i] * ((double) gridpoints - 1.0)); - double alpha = in2[i] * ((double) gridpoints - 1.0) - (double) index; - - // clip values. - if (index >= gridpoints - 1) - { - index = gridpoints - 1; - alpha = 1.0; - } - else if (index < 0) - index = 0; - clutalpha[i] = alpha; - offset += index * multiplier[i]; + int index = (int) Math.floor(in2[i] * ((double) gridpoints - 1.0)); + double alpha = in2[i] * ((double) gridpoints - 1.0) - (double) index; + + // clip values. + if (index >= gridpoints - 1) + { + index = gridpoints - 1; + alpha = 1.0; + } + else if (index < 0) + index = 0; + clutalpha[i] = alpha; + offset += index * multiplier[i]; } // Calculate interpolation weights weights[0] = 1.0; for (int j = 0; j < nIn; j++) { - int factor = 1 << j; - for (int i = 0; i < factor; i++) - { - weights[factor + i] = weights[i] * clutalpha[j]; - weights[i] *= (1.0 - clutalpha[j]); - } + int factor = 1 << j; + for (int i = 0; i < factor; i++) + { + weights[factor + i] = weights[i] * clutalpha[j]; + weights[i] *= (1.0 - clutalpha[j]); + } } for (int i = 0; i < nOut; i++) @@ -327,32 +327,32 @@ public class ColorLookUpTable for (int i = 1; i < (1 << nIn); i++) { - int offset2 = offset + offsets[i]; - for (int f = 0; f < nOut; f++) - output2[f] += weights[i] * clut[offset2 + f]; + int offset2 = offset + offsets[i]; + for (int f = 0; f < nOut; f++) + output2[f] += weights[i] * clut[offset2 + f]; } - // output table + // output table float[] output = new float[nOut]; for (int i = 0; i < nOut; i++) { - int index = (int) Math.floor(output2[i] * ((double) nOutTableEntries - - 1.0)); - - // clip values. - if (index >= nOutTableEntries - 1) - output[i] = outTable[i][nOutTableEntries - 1]; - else if (index < 0) - output[i] = outTable[i][0]; - else - { - // linear interpolation - double a = output2[i] * ((double) nOutTableEntries - 1.0) - - (double) index; - output[i] = (float) ((double) ((int) outTable[i][index] & (0xFFFF)) * (1 - - a) - + (double) ((int) outTable[i][index + 1] & (0xFFFF)) * a) / 65536f; - } + int index = (int) Math.floor(output2[i] * ((double) nOutTableEntries + - 1.0)); + + // clip values. + if (index >= nOutTableEntries - 1) + output[i] = outTable[i][nOutTableEntries - 1]; + else if (index < 0) + output[i] = outTable[i][0]; + else + { + // linear interpolation + double a = output2[i] * ((double) nOutTableEntries - 1.0) + - (double) index; + output[i] = (float) ((double) ((int) outTable[i][index] & (0xFFFF)) * (1 + - a) + + (double) ((int) outTable[i][index + 1] & (0xFFFF)) * a) / 65536f; + } } if (outputLab) @@ -365,7 +365,7 @@ public class ColorLookUpTable */ private float[] LabtoXYZ(float[] in) { - // Convert from byte-packed format to a + // Convert from byte-packed format to a // more convenient one (actual Lab values) // (See ICC spec for details) // factor is 100 * 65536 / 65280 @@ -381,12 +381,12 @@ public class ColorLookUpTable for (int i = 0; i < 3; i++) { - double exp = out[i] * out[i] * out[i]; - if (exp <= 0.008856) - out[i] = (out[i] - 16.0f / 116.0f) / 7.787f; - else - out[i] = (float) exp; - out[i] = D50[i] * out[i]; + double exp = out[i] * out[i] * out[i]; + if (exp <= 0.008856) + out[i] = (out[i] - 16.0f / 116.0f) / 7.787f; + else + out[i] = (float) exp; + out[i] = D50[i] * out[i]; } return out; } @@ -400,12 +400,12 @@ public class ColorLookUpTable for (int i = 0; i < 3; i++) { - temp[i] = in[i] / D50[i]; + temp[i] = in[i] / D50[i]; - if (temp[i] <= 0.008856f) - temp[i] = (7.7870689f * temp[i]) + (16f / 116.0f); - else - temp[i] = (float) Math.exp((1.0 / 3.0) * Math.log(temp[i])); + if (temp[i] <= 0.008856f) + temp[i] = (7.7870689f * temp[i]) + (16f / 116.0f); + else + temp[i] = (float) Math.exp((1.0 / 3.0) * Math.log(temp[i])); } float[] out = new float[3]; @@ -419,10 +419,10 @@ public class ColorLookUpTable out[2] = (out[2] + 128f) / 256f; for (int i = 0; i < 3; i++) { - if (out[i] < 0f) - out[i] = 0f; - if (out[i] > 1f) - out[i] = 1f; + if (out[i] < 0f) + out[i] = 0f; + if (out[i] > 1f) + out[i] = 1f; } return out; } |