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A generic parser and writer for all ISO 14496 based files (MP4, Quicktime, DCF, PDCF, ...)

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/*
 * Copyright 2009 castLabs GmbH, 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.coremedia.iso.boxes.fragment;

import com.coremedia.iso.IsoTypeReader;
import com.coremedia.iso.IsoTypeWriter;
import com.googlecode.mp4parser.AbstractFullBox;

import java.nio.ByteBuffer;

/**
 * 

4cc = "{@value #TYPE}"

* aligned(8) class TrackFragmentHeaderBox * extends FullBox('tfhd', 0, tf_flags){ * unsigned int(32) track_ID; * // all the following are optional fields * unsigned int(64) base_data_offset; * unsigned int(32) sample_description_index; * unsigned int(32) default_sample_duration; * unsigned int(32) default_sample_size; * unsigned int(32) default_sample_flags * } */ public class TrackFragmentHeaderBox extends AbstractFullBox { public static final String TYPE = "tfhd"; private long trackId; private long baseDataOffset = -1; private long sampleDescriptionIndex; private long defaultSampleDuration = -1; private long defaultSampleSize = -1; private SampleFlags defaultSampleFlags; private boolean durationIsEmpty; private boolean defaultBaseIsMoof; public TrackFragmentHeaderBox() { super(TYPE); } @Override protected long getContentSize() { long size = 8; int flags = getFlags(); if ((flags & 0x1) == 1) { //baseDataOffsetPresent size += 8; } if ((flags & 0x2) == 0x2) { //sampleDescriptionIndexPresent size += 4; } if ((flags & 0x8) == 0x8) { //defaultSampleDurationPresent size += 4; } if ((flags & 0x10) == 0x10) { //defaultSampleSizePresent size += 4; } if ((flags & 0x20) == 0x20) { //defaultSampleFlagsPresent size += 4; } return size; } @Override protected void getContent(ByteBuffer byteBuffer) { writeVersionAndFlags(byteBuffer); IsoTypeWriter.writeUInt32(byteBuffer, trackId); if ((getFlags() & 0x1) == 1) { //baseDataOffsetPresent IsoTypeWriter.writeUInt64(byteBuffer, getBaseDataOffset()); } if ((getFlags() & 0x2) == 0x2) { //sampleDescriptionIndexPresent IsoTypeWriter.writeUInt32(byteBuffer, getSampleDescriptionIndex()); } if ((getFlags() & 0x8) == 0x8) { //defaultSampleDurationPresent IsoTypeWriter.writeUInt32(byteBuffer, getDefaultSampleDuration()); } if ((getFlags() & 0x10) == 0x10) { //defaultSampleSizePresent IsoTypeWriter.writeUInt32(byteBuffer, getDefaultSampleSize()); } if ((getFlags() & 0x20) == 0x20) { //defaultSampleFlagsPresent defaultSampleFlags.getContent(byteBuffer); } } @Override public void _parseDetails(ByteBuffer content) { parseVersionAndFlags(content); trackId = IsoTypeReader.readUInt32(content); if ((getFlags() & 0x1) == 1) { //baseDataOffsetPresent baseDataOffset = IsoTypeReader.readUInt64(content); } if ((getFlags() & 0x2) == 0x2) { //sampleDescriptionIndexPresent sampleDescriptionIndex = IsoTypeReader.readUInt32(content); } if ((getFlags() & 0x8) == 0x8) { //defaultSampleDurationPresent defaultSampleDuration = IsoTypeReader.readUInt32(content); } if ((getFlags() & 0x10) == 0x10) { //defaultSampleSizePresent defaultSampleSize = IsoTypeReader.readUInt32(content); } if ((getFlags() & 0x20) == 0x20) { //defaultSampleFlagsPresent defaultSampleFlags = new SampleFlags(content); } if ((getFlags() & 0x10000) == 0x10000) { //durationIsEmpty durationIsEmpty = true; } if ((getFlags() & 0x20000) == 0x20000) { //defaultBaseIsMoof defaultBaseIsMoof = true; } } public boolean hasBaseDataOffset() { return (getFlags() & 0x1) != 0; } public boolean hasSampleDescriptionIndex() { return (getFlags() & 0x2) != 0; } public boolean hasDefaultSampleDuration() { return (getFlags() & 0x8) != 0; } public boolean hasDefaultSampleSize() { return (getFlags() & 0x10) != 0; } public boolean hasDefaultSampleFlags() { return (getFlags() & 0x20) != 0; } public long getTrackId() { return trackId; } public long getBaseDataOffset() { return baseDataOffset; } public long getSampleDescriptionIndex() { return sampleDescriptionIndex; } public long getDefaultSampleDuration() { return defaultSampleDuration; } public long getDefaultSampleSize() { return defaultSampleSize; } public SampleFlags getDefaultSampleFlags() { return defaultSampleFlags; } public boolean isDurationIsEmpty() { return durationIsEmpty; } public boolean isDefaultBaseIsMoof() { return defaultBaseIsMoof; } public void setTrackId(long trackId) { this.trackId = trackId; } public void setBaseDataOffset(long baseDataOffset) { if (baseDataOffset == -1) { setFlags(getFlags() & (Integer.MAX_VALUE ^ 0x1)); } else { setFlags(getFlags() | 0x1); // activate the field } this.baseDataOffset = baseDataOffset; } public void setSampleDescriptionIndex(long sampleDescriptionIndex) { if (sampleDescriptionIndex == -1) { setFlags(getFlags() & (Integer.MAX_VALUE ^ 0x2)); } else { setFlags(getFlags() | 0x2); // activate the field } this.sampleDescriptionIndex = sampleDescriptionIndex; } public void setDefaultSampleDuration(long defaultSampleDuration) { setFlags(getFlags() | 0x8); // activate the field this.defaultSampleDuration = defaultSampleDuration; } public void setDefaultSampleSize(long defaultSampleSize) { setFlags(getFlags() | 0x10); // activate the field this.defaultSampleSize = defaultSampleSize; } public void setDefaultSampleFlags(SampleFlags defaultSampleFlags) { setFlags(getFlags() | 0x20); // activate the field this.defaultSampleFlags = defaultSampleFlags; } public void setDurationIsEmpty(boolean durationIsEmpty) { setFlags(getFlags() | 0x10000); // activate the field this.durationIsEmpty = durationIsEmpty; } public void setDefaultBaseIsMoof(boolean defaultBaseIsMoof) { setFlags(getFlags() | 0x20000); // activate the field this.defaultBaseIsMoof = defaultBaseIsMoof; } @Override public String toString() { final StringBuilder sb = new StringBuilder(); sb.append("TrackFragmentHeaderBox"); sb.append("{trackId=").append(trackId); sb.append(", baseDataOffset=").append(baseDataOffset); sb.append(", sampleDescriptionIndex=").append(sampleDescriptionIndex); sb.append(", defaultSampleDuration=").append(defaultSampleDuration); sb.append(", defaultSampleSize=").append(defaultSampleSize); sb.append(", defaultSampleFlags=").append(defaultSampleFlags); sb.append(", durationIsEmpty=").append(durationIsEmpty); sb.append(", defaultBaseIsMoof=").append(defaultBaseIsMoof); sb.append('}'); return sb.toString(); } }




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