| /* ==================================================================== |
| 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. |
| ==================================================================== */ |
| |
| package org.apache.poi.ddf; |
| |
| import org.apache.poi.util.IOUtils; |
| import org.apache.poi.util.LittleEndian; |
| |
| public class EscherBlipRecord extends EscherRecord { |
| |
| //arbitrarily selected; may need to increase |
| private static final int MAX_RECORD_LENGTH = 104_857_600; |
| |
| public static final short RECORD_ID_START = (short) 0xF018; |
| public static final short RECORD_ID_END = (short) 0xF117; |
| public static final String RECORD_DESCRIPTION = "msofbtBlip"; |
| |
| private static final int HEADER_SIZE = 8; |
| |
| private byte[] field_pictureData; |
| |
| public EscherBlipRecord() { |
| } |
| |
| @Override |
| public int fillFields(byte[] data, int offset, EscherRecordFactory recordFactory) { |
| int bytesAfterHeader = readHeader( data, offset ); |
| int pos = offset + HEADER_SIZE; |
| |
| field_pictureData = IOUtils.safelyAllocate(bytesAfterHeader, MAX_RECORD_LENGTH); |
| System.arraycopy(data, pos, field_pictureData, 0, bytesAfterHeader); |
| |
| return bytesAfterHeader + 8; |
| } |
| |
| @Override |
| public int serialize(int offset, byte[] data, EscherSerializationListener listener) { |
| listener.beforeRecordSerialize(offset, getRecordId(), this); |
| |
| LittleEndian.putShort( data, offset, getOptions() ); |
| LittleEndian.putShort( data, offset + 2, getRecordId() ); |
| |
| System.arraycopy( field_pictureData, 0, data, offset + 4, field_pictureData.length ); |
| |
| listener.afterRecordSerialize(offset + 4 + field_pictureData.length, getRecordId(), field_pictureData.length + 4, this); |
| return field_pictureData.length + 4; |
| } |
| |
| @Override |
| public int getRecordSize() { |
| return field_pictureData.length + HEADER_SIZE; |
| } |
| |
| @Override |
| public String getRecordName() { |
| return "Blip"; |
| } |
| |
| /** |
| * Gets the picture data bytes |
| * |
| * @return the picture data |
| */ |
| public byte[] getPicturedata() { |
| return field_pictureData; |
| } |
| |
| /** |
| * Sets the picture data bytes |
| * |
| * @param pictureData the picture data |
| */ |
| public void setPictureData(byte[] pictureData) { |
| setPictureData(pictureData, 0, (pictureData == null ? 0 : pictureData.length)); |
| } |
| |
| /** |
| * Sets the picture data bytes |
| * |
| * @param pictureData the picture data |
| * @param offset the offset into the picture data |
| * @param length the amount of bytes to be used |
| */ |
| public void setPictureData(byte[] pictureData, int offset, int length) { |
| if (pictureData == null || offset < 0 || length < 0 || pictureData.length < offset+length) { |
| throw new IllegalArgumentException("picture data can't be null"); |
| } |
| field_pictureData = IOUtils.safelyAllocate(length, MAX_RECORD_LENGTH); |
| System.arraycopy(pictureData, offset, field_pictureData, 0, length); |
| } |
| |
| @Override |
| protected Object[][] getAttributeMap() { |
| return new Object[][] { |
| { "Extra Data", getPicturedata() } |
| }; |
| } |
| } |