/*
* 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.sanselan.formats.tiff.write;
import java.io.IOException;
import org.apache.sanselan.ImageWriteException;
import org.apache.sanselan.common.BinaryOutputStream;
import org.apache.sanselan.formats.tiff.constants.TagInfo;
import org.apache.sanselan.formats.tiff.constants.TiffConstants;
import org.apache.sanselan.formats.tiff.fieldtypes.FieldType;
public class TiffOutputField implements TiffConstants
{
public final int tag;
public final TagInfo tagInfo;
public final FieldType fieldType;
public final int count;
private byte bytes[];
private final TiffOutputItem.Value separateValueItem;
public TiffOutputField(TagInfo tagInfo, FieldType tagtype, int count,
byte bytes[])
{
this(tagInfo.tag, tagInfo, tagtype, count, bytes);
}
public TiffOutputField(final int tag, TagInfo tagInfo, FieldType fieldType,
int count, byte bytes[])
{
this.tag = tag;
this.tagInfo = tagInfo;
this.fieldType = fieldType;
this.count = count;
this.bytes = bytes;
if (isLocalValue())
separateValueItem = null;
else
{
String name = "Field Seperate value (" + tagInfo.getDescription()
+ ")";
separateValueItem = new TiffOutputItem.Value(name, bytes);
}
}
private int sortHint = -1;
public static TiffOutputField create(TagInfo tagInfo, int byteOrder,
Number number) throws ImageWriteException
{
if (tagInfo.dataTypes == null || tagInfo.dataTypes.length < 1)
throw new ImageWriteException("Tag has no default data type.");
FieldType fieldType = tagInfo.dataTypes[0];
if (tagInfo.length != 1)
throw new ImageWriteException("Tag does not expect a single value.");
byte bytes[] = fieldType.writeData(number, byteOrder);
return new TiffOutputField(tagInfo.tag, tagInfo, fieldType, 1, bytes);
}
public static TiffOutputField create(TagInfo tagInfo, int byteOrder,
Number value[]) throws ImageWriteException
{
if (tagInfo.dataTypes == null || tagInfo.dataTypes.length < 1)
throw new ImageWriteException("Tag has no default data type.");
FieldType fieldType = tagInfo.dataTypes[0];
if (tagInfo.length != value.length)
throw new ImageWriteException("Tag does not expect a single value.");
byte bytes[] = fieldType.writeData(value, byteOrder);
return new TiffOutputField(tagInfo.tag, tagInfo, fieldType,
value.length, bytes);
}
public static TiffOutputField create(TagInfo tagInfo, int byteOrder,
String value) throws ImageWriteException
{
FieldType fieldType;
if (tagInfo.dataTypes == null)
fieldType = FIELD_TYPE_ASCII;
else if (tagInfo.dataTypes == FIELD_TYPE_DESCRIPTION_ASCII)
fieldType = FIELD_TYPE_ASCII;
else
throw new ImageWriteException("Tag has unexpected data type.");
byte bytes[] = fieldType.writeData(value, byteOrder);
return new TiffOutputField(tagInfo.tag, tagInfo, fieldType, 1, bytes);
}
protected static final TiffOutputField createOffsetField(TagInfo tagInfo,
int byteOrder) throws ImageWriteException
{
return new TiffOutputField(tagInfo, FIELD_TYPE_LONG, 1, FIELD_TYPE_LONG
.writeData(new int[] { 0, }, byteOrder));
}
protected void writeField(BinaryOutputStream bos) throws IOException,
ImageWriteException
{
bos.write2Bytes(tag);
bos.write2Bytes(fieldType.type);
bos.write4Bytes(count);
if (isLocalValue())
{
if (separateValueItem != null)
throw new ImageWriteException("Unexpected separate value item.");
if (bytes.length > 4)
throw new ImageWriteException(
"Local value has invalid length: " + bytes.length);
bos.writeByteArray(bytes);
int remainder = TIFF_ENTRY_MAX_VALUE_LENGTH - bytes.length;
for (int i = 0; i < remainder; i++)
bos.write(0);
} else
{
if (separateValueItem == null)
throw new ImageWriteException("Missing separate value item.");
bos.write4Bytes(separateValueItem.getOffset());
}
}
protected TiffOutputItem getSeperateValue()
{
return separateValueItem;
}
protected boolean isLocalValue()
{
return bytes.length <= TIFF_ENTRY_MAX_VALUE_LENGTH;
}
protected void setData(byte bytes[]) throws ImageWriteException
{
// if(tagInfo.isUnknown())
// Debug.debug("unknown tag(0x" + Integer.toHexString(tag)
// + ") setData", bytes);
if (this.bytes.length != bytes.length)
throw new ImageWriteException("Cannot change size of value.");
// boolean wasLocalValue = isLocalValue();
this.bytes = bytes;
if (separateValueItem != null)
separateValueItem.updateValue(bytes);
// if (isLocalValue() != wasLocalValue)
// throw new Error("Bug. Locality disrupted! "
// + tagInfo.getDescription());
}
private static final String newline = System.getProperty("line.separator");
public String toString()
{
return toString(null);
}
public String toString(String prefix)
{
if (prefix == null)
prefix = "";
StringBuffer result = new StringBuffer();
result.append(prefix);
result.append(tagInfo);
result.append(newline);
result.append(prefix);
result.append("count: " + count);
result.append(newline);
result.append(prefix);
result.append(fieldType);
result.append(newline);
return result.toString();
}
public int getSortHint()
{
return sortHint;
}
public void setSortHint(int sortHint)
{
this.sortHint = sortHint;
}
}