123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176 |
- /*
- * 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.
- */
-
- /* $Id$ */
-
- package org.apache.fop.afp.ioca;
-
- import java.io.IOException;
- import java.io.OutputStream;
-
- import org.apache.fop.afp.modca.AbstractStructuredObject;
- import org.apache.fop.afp.util.BinaryUtils;
-
- public class Tile extends AbstractStructuredObject {
-
- private static final int MAX_DATA_LEN = 8191;
- private TilePosition tilePosition = null;
- private TileSize tileSize = null;
- private BandImage bandImage;
- private byte[] data;
-
- private IDEStructureParameter ideStructureParameter;
- private byte encoding = (byte) 0x03;
- private byte ideSize = 1;
- // private byte compression = (byte) 0xC0; // Baseline DCT in case of JPEG compression
-
- @Override
- public void writeContent(OutputStream os) throws IOException {
- tilePosition.writeToStream(os);
- tileSize.writeToStream(os);
- os.write(getImageEncodingParameter());
- os.write(getImageIDESizeParameter());
- if (bandImage != null) {
- bandImage.writeToStream(os);
- }
- if (ideStructureParameter != null) {
- ideStructureParameter.writeToStream(os);
- }
- if (data != null) {
- byte[] c = new byte[data.length / 4];
- byte[] m = new byte[data.length / 4];
- byte[] y = new byte[data.length / 4];
- byte[] k = new byte[data.length / 4];
- for (int j = 0; j < data.length / 4; j++) {
- c[j] = data[4 * j];
- m[j] = data[4 * j + 1];
- y[j] = data[4 * j + 2];
- k[j] = data[4 * j + 3];
- }
- final byte[] dataHeader = new byte[] {(byte) 0xFE, // ID
- (byte) 0x9C, // ID
- 0x00, // length
- 0x00, // length
- 0x00, // bandnum
- 0x00, // reserved
- 0x00 // reserved
- };
- final int lengthOffset = 2;
- dataHeader[4] = (byte) 0x01;
- writeChunksToStream(c, dataHeader, lengthOffset, MAX_DATA_LEN, os);
- dataHeader[4] = (byte) 0x02;
- writeChunksToStream(m, dataHeader, lengthOffset, MAX_DATA_LEN, os);
- dataHeader[4] = (byte) 0x03;
- writeChunksToStream(y, dataHeader, lengthOffset, MAX_DATA_LEN, os);
- dataHeader[4] = (byte) 0x04;
- writeChunksToStream(k, dataHeader, lengthOffset, MAX_DATA_LEN, os);
- }
- }
-
- @Override
- protected void writeStart(OutputStream os) throws IOException {
- final byte[] startData = new byte[] {(byte) 0x8C, // ID
- 0x00 // Length
- };
- os.write(startData);
- }
-
- @Override
- protected void writeEnd(OutputStream os) throws IOException {
- final byte[] endData = new byte[] {(byte) 0x8D, // ID
- 0x00, // Length
- };
- os.write(endData);
- }
-
- public void setPosition(TilePosition tilePosition) {
- this.tilePosition = tilePosition;
- }
-
- public void setSize(TileSize tileSize) {
- this.tileSize = tileSize;
- }
-
- public void setImageData(byte[] imageData) {
- this.data = imageData.clone();
- }
-
- protected static void writeChunksToStream(byte[] data, byte[] dataHeader, int lengthOffset,
- int maxChunkLength, OutputStream os) throws IOException {
- int dataLength = data.length;
- maxChunkLength -= 3;
- int numFullChunks = dataLength / maxChunkLength;
- int lastChunkLength = dataLength % maxChunkLength;
-
- byte[] len = {(byte) 0x1f, (byte) 0xff};
- int off = 0;
- if (numFullChunks > 0) {
- // write out full data chunks
- dataHeader[lengthOffset] = len[0]; // Length byte 1
- dataHeader[lengthOffset + 1] = len[1]; // Length byte 2
- for (int i = 0; i < numFullChunks; i++, off += maxChunkLength) {
- os.write(dataHeader);
- os.write(data, off, maxChunkLength);
- }
- }
-
- if (lastChunkLength > 0) {
- // write last data chunk
- len = BinaryUtils.convert(3 + lastChunkLength, 2);
- dataHeader[lengthOffset] = len[0]; // Length byte 1
- dataHeader[lengthOffset + 1] = len[1]; // Length byte 2
- os.write(dataHeader);
- os.write(data, off, lastChunkLength);
- }
- }
-
- public void setImageEncodingParameter(byte encoding) {
- this.encoding = encoding;
- }
-
- public void setImageIDESizeParameter(byte ideSize) {
- this.ideSize = ideSize;
- }
-
- public void setIDEStructureParameter(IDEStructureParameter ideStructureParameter) {
- this.ideStructureParameter = ideStructureParameter;
- }
-
- private byte[] getImageEncodingParameter() {
- final byte[] encodingData = new byte[] {(byte) 0x95, // ID
- 0x02, // Length
- encoding, (byte) (encoding == ImageContent.COMPID_JPEG ? 0xFE : 0x01), // RECID
- };
- return encodingData;
- }
-
- private byte[] getImageIDESizeParameter() {
- if (ideSize != 1) {
- final byte[] ideSizeData = new byte[] {(byte) 0x96, // ID
- 0x01, // Length
- ideSize};
- return ideSizeData;
- } else {
- return new byte[0];
- }
- }
-
- public void setBandImage(BandImage bandImage) {
- this.bandImage = bandImage;
- }
-
- }
|