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This is a fork of com.drewnoakes' metadata-extractor that relocates com.adobe.internal to com.adobe.
Java library for extracting EXIF, IPTC, XMP, ICC and other metadata from image and video files.
/*
* Copyright 2002-2019 Drew Noakes and contributors
*
* 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:
*
* https://drewnoakes.com/code/exif/
* https://github.com/drewnoakes/metadata-extractor
*/
package com.drew.imaging.heif;
import com.drew.lang.StreamReader;
import com.drew.metadata.heif.boxes.Box;
import java.io.IOException;
import java.io.InputStream;
public class HeifReader
{
public void extract(InputStream inputStream, HeifHandler handler)
{
StreamReader reader = new StreamReader(inputStream);
reader.setMotorolaByteOrder(true);
processBoxes(reader, -1, handler);
}
private void processBoxes(StreamReader reader, long atomEnd, HeifHandler handler)
{
try {
while (atomEnd == -1 || reader.getPosition() < atomEnd) {
Box box = new Box(reader);
// Determine if fourCC is container/atom and process accordingly
// Unknown atoms will be skipped
if (handler.shouldAcceptContainer(box)) {
handler.processContainer(box, reader);
processBoxes(reader, box.size + reader.getPosition() - 8, handler);
} else if (handler.shouldAcceptBox(box)) {
handler = handler.processBox(box, reader.getBytes((int)box.size - 8));
} else if (box.size > 1) {
reader.skip(box.size - 8);
} else if (box.size == -1) {
break;
}
}
} catch (IOException e) {
// Currently, reader relies on IOException to end
}
}
}