1 /* 2 * Copyright 2008 CoreMedia AG, Hamburg 3 * 4 * Licensed under the Apache License, Version 2.0 (the License); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an AS IS BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.coremedia.iso.boxes; 18 19 import com.coremedia.iso.IsoTypeReader; 20 import com.coremedia.iso.IsoTypeWriter; 21 22 import java.nio.ByteBuffer; 23 24 /** 25 * The video media header contains general presentation information, independent of the coding, for video 26 * media. Note that the flags field has the value 1. 27 */ 28 public class VideoMediaHeaderBox extends AbstractMediaHeaderBox { 29 private int graphicsmode = 0; 30 private int[] opcolor = new int[]{0, 0, 0}; 31 public static final String TYPE = "vmhd"; 32 33 public VideoMediaHeaderBox() { 34 super(TYPE); 35 setFlags(1); // 1 is default. 36 } 37 38 public int getGraphicsmode() { 39 return graphicsmode; 40 } 41 42 public int[] getOpcolor() { 43 return opcolor; 44 } 45 46 protected long getContentSize() { 47 return 12; 48 } 49 50 51 @Override 52 public void _parseDetails(ByteBuffer content) { 53 parseVersionAndFlags(content); 54 graphicsmode = IsoTypeReader.readUInt16(content); 55 opcolor = new int[3]; 56 for (int i = 0; i < 3; i++) { 57 opcolor[i] = IsoTypeReader.readUInt16(content); 58 } 59 } 60 61 @Override 62 protected void getContent(ByteBuffer byteBuffer) { 63 writeVersionAndFlags(byteBuffer); 64 IsoTypeWriter.writeUInt16(byteBuffer, graphicsmode); 65 for (int anOpcolor : opcolor) { 66 IsoTypeWriter.writeUInt16(byteBuffer, anOpcolor); 67 } 68 } 69 70 public String toString() { 71 return "VideoMediaHeaderBox[graphicsmode=" + getGraphicsmode() + ";opcolor0=" + getOpcolor()[0] + ";opcolor1=" + getOpcolor()[1] + ";opcolor2=" + getOpcolor()[2] + "]"; 72 } 73 74 public void setOpcolor(int[] opcolor) { 75 this.opcolor = opcolor; 76 } 77 78 public void setGraphicsmode(int graphicsmode) { 79 this.graphicsmode = graphicsmode; 80 } 81 } 82
