/* * 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.quicktime; import com.drew.lang.annotations.NotNull; import com.drew.lang.annotations.Nullable; import com.drew.metadata.Metadata; import com.drew.metadata.mov.QuickTimeContext; import com.drew.metadata.mov.QuickTimeDirectory; import com.drew.metadata.mov.atoms.Atom; import java.io.IOException; /** * @author Payton Garland */ public abstract class QuickTimeHandler<T extends QuickTimeDirectory> { @NotNull protected Metadata metadata; @NotNull protected T directory; public QuickTimeHandler(@NotNull Metadata metadata) { this.metadata = metadata; this.directory = getDirectory(); metadata.addDirectory(directory); } @NotNull protected abstract T getDirectory(); protected abstract boolean shouldAcceptAtom(@NotNull Atom atom); protected abstract boolean shouldAcceptContainer(@NotNull Atom atom); protected abstract QuickTimeHandler<?> processAtom(@NotNull Atom atom, @Nullable byte[] payload, QuickTimeContext context) throws IOException; protected QuickTimeHandler<?> processContainer(@NotNull Atom atom, QuickTimeContext context) throws IOException { return processAtom(atom, null, context); } public void addError(@NotNull String message) { directory.addError(message); } }