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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/internal/image/JPEGFrameHeader.java')
-rwxr-xr-xbundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/internal/image/JPEGFrameHeader.java214
1 files changed, 0 insertions, 214 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/internal/image/JPEGFrameHeader.java b/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/internal/image/JPEGFrameHeader.java
deleted file mode 100755
index 00d761078c..0000000000
--- a/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/internal/image/JPEGFrameHeader.java
+++ /dev/null
@@ -1,214 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2000, 2005 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- *******************************************************************************/
-package org.eclipse.swt.internal.image;
-
-
-import org.eclipse.swt.*;
-
-final class JPEGFrameHeader extends JPEGVariableSizeSegment {
- int maxVFactor;
- int maxHFactor;
- public int[] componentIdentifiers;
- public int[][] componentParameters;
-
- public JPEGFrameHeader(byte[] reference) {
- super(reference);
- }
-
- public JPEGFrameHeader(LEDataInputStream byteStream) {
- super(byteStream);
- initializeComponentParameters();
- }
-
- public int getSamplePrecision() {
- return reference[4] & 0xFF;
- }
-
- public int getNumberOfLines() {
- return (reference[5] & 0xFF) << 8 | (reference[6] & 0xFF);
- }
-
- public int getSamplesPerLine() {
- return (reference[7] & 0xFF) << 8 | (reference[8] & 0xFF);
- }
-
- public int getNumberOfImageComponents() {
- return reference[9] & 0xFF;
- }
-
- public void setSamplePrecision(int precision) {
- reference[4] = (byte)(precision & 0xFF);
- }
-
- public void setNumberOfLines(int anInteger) {
- reference[5] = (byte)((anInteger & 0xFF00) >> 8);
- reference[6] = (byte)(anInteger & 0xFF);
- }
-
- public void setSamplesPerLine(int samples) {
- reference[7] = (byte)((samples & 0xFF00) >> 8);
- reference[8] = (byte)(samples & 0xFF);
- }
-
- public void setNumberOfImageComponents(int anInteger) {
- reference[9] = (byte)(anInteger & 0xFF);
- }
-
- public int getMaxHFactor() {
- return maxHFactor;
- }
-
- public int getMaxVFactor() {
- return maxVFactor;
- }
-
- public void setMaxHFactor(int anInteger) {
- maxHFactor = anInteger;
- }
-
- public void setMaxVFactor(int anInteger) {
- maxVFactor = anInteger;
- }
-
- /* Used when decoding. */
- void initializeComponentParameters() {
- int nf = getNumberOfImageComponents();
- componentIdentifiers = new int[nf];
- int[][] compSpecParams = new int[0][];
- int hmax = 1;
- int vmax = 1;
- for (int i = 0; i < nf; i++) {
- int ofs = i * 3 + 10;
- int ci = reference[ofs] & 0xFF;
- componentIdentifiers[i] = ci;
- int hi = (reference[ofs + 1] & 0xFF) >> 4;
- int vi = reference[ofs + 1] & 0xF;
- int tqi = reference[ofs + 2] & 0xFF;
- if (hi > hmax) {
- hmax = hi;
- }
- if (vi > vmax) {
- vmax = vi;
- }
- int[] compParam = new int[5];
- compParam[0] = tqi;
- compParam[1] = hi;
- compParam[2] = vi;
- if (compSpecParams.length <= ci) {
- int[][] newParams = new int[ci + 1][];
- System.arraycopy(compSpecParams, 0, newParams, 0, compSpecParams.length);
- compSpecParams = newParams;
- }
- compSpecParams[ci] = compParam;
- }
- int x = getSamplesPerLine();
- int y = getNumberOfLines();
- int[] multiples = new int[] { 8, 16, 24, 32 };
- for (int i = 0; i < nf; i++) {
- int[] compParam = compSpecParams[componentIdentifiers[i]];
- int hi = compParam[1];
- int vi = compParam[2];
- int compWidth = (x * hi + hmax - 1) / hmax;
- int compHeight = (y * vi + vmax - 1) / vmax;
- int dsWidth = roundUpToMultiple(compWidth, multiples[hi - 1]);
- int dsHeight = roundUpToMultiple(compHeight, multiples[vi - 1]);
- compParam[3] = dsWidth;
- compParam[4] = dsHeight;
- }
- setMaxHFactor(hmax);
- setMaxVFactor(vmax);
- componentParameters = compSpecParams;
- }
-
- /* Used when encoding. */
- public void initializeContents() {
- int nf = getNumberOfImageComponents();
- if (nf == 0 || nf != componentParameters.length) {
- SWT.error(SWT.ERROR_INVALID_IMAGE);
- }
- int hmax = 0;
- int vmax = 0;
- int[][] compSpecParams = componentParameters;
- for (int i = 0; i < nf; i++) {
- int ofs = i * 3 + 10;
- int[] compParam = compSpecParams[componentIdentifiers[i]];
- int hi = compParam[1];
- int vi = compParam[2];
- if (hi * vi > 4) {
- SWT.error(SWT.ERROR_INVALID_IMAGE);
- }
- reference[ofs] = (byte)(i + 1);
- reference[ofs + 1] = (byte)(hi * 16 + vi);
- reference[ofs + 2] = (byte)(compParam[0]);
- if (hi > hmax) hmax = hi;
- if (vi > vmax) vmax = vi;
- }
- int x = getSamplesPerLine();
- int y = getNumberOfLines();
- int[] multiples = new int[] {8, 16, 24, 32};
- for (int i = 0; i < nf; i++) {
- int[] compParam = compSpecParams[componentIdentifiers[i]];
- int hi = compParam[1];
- int vi = compParam[2];
- int compWidth = (x * hi + hmax - 1) / hmax;
- int compHeight = (y * vi + vmax - 1) / vmax;
- int dsWidth = roundUpToMultiple(compWidth, multiples[hi - 1]);
- int dsHeight = roundUpToMultiple(compHeight, multiples[vi - 1]);
- compParam[3] = dsWidth;
- compParam[4] = dsHeight;
- }
- setMaxHFactor(hmax);
- setMaxVFactor(vmax);
- }
-
- int roundUpToMultiple(int anInteger, int mInteger) {
- int a = anInteger + mInteger - 1;
- return a - (a % mInteger);
- }
-
- /*
- * Verify the information contained in the receiver is correct.
- * Answer true if the header contains a valid marker. Otherwise,
- * answer false. Valid Start Of Frame markers are:
- * SOF_0 - Baseline DCT, Huffman coding
- * SOF_1 - Extended sequential DCT, Huffman coding
- * SOF_2 - Progressive DCT, Huffman coding
- * SOF_3 - Lossless (sequential), Huffman coding
- * SOF_5 - Differential sequential, Huffman coding
- * SOF_6 - Differential progressive, Huffman coding
- * SOF_7 - Differential lossless, Huffman coding
- * SOF_9 - Extended sequential DCT, arithmetic coding
- * SOF_10 - Progressive DCT, arithmetic coding
- * SOF_11 - Lossless (sequential), arithmetic coding
- * SOF_13 - Differential sequential, arithmetic coding
- * SOF_14 - Differential progressive, arithmetic coding
- * SOF_15 - Differential lossless, arithmetic coding
- */
- public boolean verify() {
- int marker = getSegmentMarker();
- return (marker >= JPEGFileFormat.SOF0 && marker <= JPEGFileFormat.SOF3) ||
- (marker >= JPEGFileFormat.SOF5 && marker <= JPEGFileFormat.SOF7) ||
- (marker >= JPEGFileFormat.SOF9 && marker <= JPEGFileFormat.SOF11) ||
- (marker >= JPEGFileFormat.SOF13 && marker <= JPEGFileFormat.SOF15);
- }
-
- public boolean isProgressive() {
- int marker = getSegmentMarker();
- return marker == JPEGFileFormat.SOF2
- || marker == JPEGFileFormat.SOF6
- || marker == JPEGFileFormat.SOF10
- || marker == JPEGFileFormat.SOF14;
- }
-
- public boolean isArithmeticCoding() {
- return getSegmentMarker() >= JPEGFileFormat.SOF9;
- }
-}