/*
* Copyright 2002-2013 Drew Noakes
*
* Licensed 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.
*
* More information about this project is available at:
*
* http://drewnoakes.com/code/exif/
* http://code.google.com/p/metadata-extractor/
*/
package com.drew.imaging.tiff;
import com.drew.lang.RandomAccessFileReader;
import com.drew.lang.RandomAccessStreamReader;
import com.drew.lang.annotations.NotNull;
import com.drew.metadata.Metadata;
import com.drew.metadata.exif.ExifReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.RandomAccessFile;
/**
* Obtains all available metadata from TIFF formatted files. Note that TIFF files include many digital camera RAW
* formats, including Canon (CRW, CR2), Nikon (NEF), Olympus (ORF) and Panasonic (RW2).
*
* @author Darren Salomons, Drew Noakes http://drewnoakes.com
*/
public class TiffMetadataReader
{
@NotNull
public static Metadata readMetadata(@NotNull File file) throws IOException
{
Metadata metadata = new Metadata();
RandomAccessFile randomAccessFile = new RandomAccessFile(file, "r");
try {
new ExifReader().extractTiff(new RandomAccessFileReader(randomAccessFile), metadata);
} finally {
randomAccessFile.close();
}
return metadata;
}
@NotNull
public static Metadata readMetadata(@NotNull InputStream inputStream)
{
// TIFF processing requires random access, as directories can be scattered throughout the byte sequence.
// InputStream does not support seeking backwards, and so is not a viable option for TIFF processing.
// We use RandomAccessStreamReader, which buffers data from the stream as we seek forward.
Metadata metadata = new Metadata();
new ExifReader().extractTiff(new RandomAccessStreamReader(inputStream), metadata);
return metadata;
}
}