| /* |
| * Copyright 2008 CoreMedia AG, Hamburg |
| * |
| * 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.coremedia.iso.boxes; |
| |
| |
| import com.coremedia.iso.IsoTypeReader; |
| import com.coremedia.iso.IsoTypeWriter; |
| import com.googlecode.mp4parser.AbstractFullBox; |
| |
| import java.nio.ByteBuffer; |
| |
| /** |
| * This box specifies the characteristics of a single track. Exactly one Track Header Box is contained in a track.<br> |
| * In the absence of an edit list, the presentation of a track starts at the beginning of the overall presentation. An |
| * empty edit is used to offset the start time of a track. <br> |
| * The default value of the track header flags for media tracks is 7 (track_enabled, track_in_movie, |
| * track_in_preview). If in a presentation all tracks have neither track_in_movie nor track_in_preview set, then all |
| * tracks shall be treated as if both flags were set on all tracks. Hint tracks should have the track header flags set |
| * to 0, so that they are ignored for local playback and preview. |
| */ |
| public class TrackHeaderBox extends AbstractFullBox { |
| |
| public static final String TYPE = "tkhd"; |
| |
| private long creationTime; |
| private long modificationTime; |
| private long trackId; |
| private long duration; |
| private int layer; |
| private int alternateGroup; |
| private float volume; |
| private long[] matrix = new long[]{0x00010000, 0, 0, 0, 0x00010000, 0, 0, 0, 0x40000000}; |
| private double width; |
| private double height; |
| |
| |
| public TrackHeaderBox() { |
| super(TYPE); |
| |
| } |
| |
| public long getCreationTime() { |
| return creationTime; |
| } |
| |
| public long getModificationTime() { |
| return modificationTime; |
| } |
| |
| public long getTrackId() { |
| return trackId; |
| } |
| |
| public long getDuration() { |
| return duration; |
| } |
| |
| public int getLayer() { |
| return layer; |
| } |
| |
| public int getAlternateGroup() { |
| return alternateGroup; |
| } |
| |
| public float getVolume() { |
| return volume; |
| } |
| |
| public long[] getMatrix() { |
| return matrix; |
| } |
| |
| public double getWidth() { |
| return width; |
| } |
| |
| public double getHeight() { |
| return height; |
| } |
| |
| protected long getContentSize() { |
| long contentSize = 4; |
| if (getVersion() == 1) { |
| contentSize += 32; |
| } else { |
| contentSize += 20; |
| } |
| contentSize += 60; |
| return contentSize; |
| } |
| |
| @Override |
| public void _parseDetails(ByteBuffer content) { |
| parseVersionAndFlags(content); |
| if (getVersion() == 1) { |
| creationTime = IsoTypeReader.readUInt64(content); |
| modificationTime = IsoTypeReader.readUInt64(content); |
| trackId = IsoTypeReader.readUInt32(content); |
| IsoTypeReader.readUInt32(content); |
| duration = IsoTypeReader.readUInt64(content); |
| } else { |
| creationTime = IsoTypeReader.readUInt32(content); |
| modificationTime = IsoTypeReader.readUInt32(content); |
| trackId = IsoTypeReader.readUInt32(content); |
| IsoTypeReader.readUInt32(content); |
| duration = IsoTypeReader.readUInt32(content); |
| } // 196 |
| IsoTypeReader.readUInt32(content); |
| IsoTypeReader.readUInt32(content); |
| layer = IsoTypeReader.readUInt16(content); // 204 |
| alternateGroup = IsoTypeReader.readUInt16(content); |
| volume = IsoTypeReader.readFixedPoint88(content); |
| IsoTypeReader.readUInt16(content); // 212 |
| matrix = new long[9]; |
| for (int i = 0; i < 9; i++) { |
| matrix[i] = IsoTypeReader.readUInt32(content); |
| } |
| width = IsoTypeReader.readFixedPoint1616(content); // 248 |
| height = IsoTypeReader.readFixedPoint1616(content); |
| } |
| |
| public void getContent(ByteBuffer byteBuffer) { |
| writeVersionAndFlags(byteBuffer); |
| if (getVersion() == 1) { |
| IsoTypeWriter.writeUInt64(byteBuffer, creationTime); |
| IsoTypeWriter.writeUInt64(byteBuffer, modificationTime); |
| IsoTypeWriter.writeUInt32(byteBuffer, trackId); |
| IsoTypeWriter.writeUInt32(byteBuffer, 0); |
| IsoTypeWriter.writeUInt64(byteBuffer, duration); |
| } else { |
| IsoTypeWriter.writeUInt32(byteBuffer, creationTime); |
| IsoTypeWriter.writeUInt32(byteBuffer, modificationTime); |
| IsoTypeWriter.writeUInt32(byteBuffer, trackId); |
| IsoTypeWriter.writeUInt32(byteBuffer, 0); |
| IsoTypeWriter.writeUInt32(byteBuffer, duration); |
| } // 196 |
| IsoTypeWriter.writeUInt32(byteBuffer, 0); |
| IsoTypeWriter.writeUInt32(byteBuffer, 0); |
| IsoTypeWriter.writeUInt16(byteBuffer, layer); |
| IsoTypeWriter.writeUInt16(byteBuffer, alternateGroup); |
| IsoTypeWriter.writeFixedPont88(byteBuffer, volume); |
| IsoTypeWriter.writeUInt16(byteBuffer, 0); |
| for (int i = 0; i < 9; i++) { |
| IsoTypeWriter.writeUInt32(byteBuffer, matrix[i]); |
| } |
| IsoTypeWriter.writeFixedPont1616(byteBuffer, width); |
| IsoTypeWriter.writeFixedPont1616(byteBuffer, height); |
| } |
| |
| public String toString() { |
| StringBuilder result = new StringBuilder(); |
| result.append("TrackHeaderBox["); |
| result.append("creationTime=").append(getCreationTime()); |
| result.append(";"); |
| result.append("modificationTime=").append(getModificationTime()); |
| result.append(";"); |
| result.append("trackId=").append(getTrackId()); |
| result.append(";"); |
| result.append("duration=").append(getDuration()); |
| result.append(";"); |
| result.append("layer=").append(getLayer()); |
| result.append(";"); |
| result.append("alternateGroup=").append(getAlternateGroup()); |
| result.append(";"); |
| result.append("volume=").append(getVolume()); |
| for (int i = 0; i < matrix.length; i++) { |
| result.append(";"); |
| result.append("matrix").append(i).append("=").append(matrix[i]); |
| } |
| result.append(";"); |
| result.append("width=").append(getWidth()); |
| result.append(";"); |
| result.append("height=").append(getHeight()); |
| result.append("]"); |
| return result.toString(); |
| } |
| |
| public void setCreationTime(long creationTime) { |
| this.creationTime = creationTime; |
| } |
| |
| public void setModificationTime(long modificationTime) { |
| this.modificationTime = modificationTime; |
| } |
| |
| public void setTrackId(long trackId) { |
| this.trackId = trackId; |
| } |
| |
| public void setDuration(long duration) { |
| this.duration = duration; |
| } |
| |
| public void setLayer(int layer) { |
| this.layer = layer; |
| } |
| |
| public void setAlternateGroup(int alternateGroup) { |
| this.alternateGroup = alternateGroup; |
| } |
| |
| public void setVolume(float volume) { |
| this.volume = volume; |
| } |
| |
| public void setMatrix(long[] matrix) { |
| this.matrix = matrix; |
| } |
| |
| public void setWidth(double width) { |
| this.width = width; |
| } |
| |
| public void setHeight(double height) { |
| this.height = height; |
| } |
| |
| |
| public boolean isEnabled() { |
| return (getFlags() & 1) > 0; |
| } |
| |
| public boolean isInMovie() { |
| return (getFlags() & 2) > 0; |
| } |
| |
| public boolean isInPreview() { |
| return (getFlags() & 4) > 0; |
| } |
| |
| public boolean isInPoster() { |
| return (getFlags() & 8) > 0; |
| } |
| } |