| /* |
| * Copyright 2012 castLabs, Berlin |
| * |
| * 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. |
| */ |
| |
| package com.googlecode.mp4parser.boxes.mp4.samplegrouping; |
| |
| import java.nio.ByteBuffer; |
| |
| /** |
| * roll_distance is a signed integer that gives the number of samples that must be decoded in order for |
| * a sample to be decoded correctly. A positive value indicates the number of samples after the sample |
| * that is a group member that must be decoded such that at the last of these recovery is complete, i.e. |
| * the last sample is correct. A negative value indicates the number of samples before the sample that is |
| * a group member that must be decoded in order for recovery to be complete at the marked sample. |
| * The value zero must not be used; the sync sample table documents random access points for which |
| * no recovery roll is needed. |
| */ |
| public class RollRecoveryEntry extends GroupEntry { |
| public static final String TYPE = "roll"; |
| private short rollDistance; |
| |
| public short getRollDistance() { |
| return rollDistance; |
| } |
| |
| public void setRollDistance(short rollDistance) { |
| this.rollDistance = rollDistance; |
| } |
| |
| @Override |
| public void parse(ByteBuffer byteBuffer) { |
| rollDistance = byteBuffer.getShort(); |
| } |
| |
| @Override |
| public ByteBuffer get() { |
| ByteBuffer content = ByteBuffer.allocate(2); |
| content.putShort(rollDistance); |
| content.rewind(); |
| return content; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| |
| RollRecoveryEntry entry = (RollRecoveryEntry) o; |
| |
| if (rollDistance != entry.rollDistance) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| @Override |
| public int hashCode() { |
| return (int) rollDistance; |
| } |
| } |