| /* |
| * 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.googlecode.mp4parser.AbstractContainerBox; |
| |
| /** |
| * The sample table contains all the time and data indexing of the media samples in a track. Using the tables |
| * here, it is possible to locate samples in time, determine their type (e.g. I-frame or not), and determine their |
| * size, container, and offset into that container. <br> |
| * If the track that contains the Sample Table Box references no data, then the Sample Table Box does not need |
| * to contain any sub-boxes (this is not a very useful media track). <br> |
| * If the track that the Sample Table Box is contained in does reference data, then the following sub-boxes are |
| * required: Sample Description, Sample Size, Sample To Chunk, and Chunk Offset. Further, the Sample |
| * Description Box shall contain at least one entry. A Sample Description Box is required because it contains the |
| * data reference index field which indicates which Data Reference Box to use to retrieve the media samples. |
| * Without the Sample Description, it is not possible to determine where the media samples are stored. The Sync |
| * Sample Box is optional. If the Sync Sample Box is not present, all samples are sync samples.<br> |
| * Annex A provides a narrative description of random access using the structures defined in the Sample Table |
| * Box. |
| */ |
| public class SampleTableBox extends AbstractContainerBox { |
| public static final String TYPE = "stbl"; |
| |
| public SampleTableBox() { |
| super(TYPE); |
| } |
| |
| public SampleDescriptionBox getSampleDescriptionBox() { |
| for (Box box : boxes) { |
| if (box instanceof SampleDescriptionBox) { |
| return (SampleDescriptionBox) box; |
| } |
| } |
| return null; |
| } |
| |
| public SampleSizeBox getSampleSizeBox() { |
| for (Box box : boxes) { |
| if (box instanceof SampleSizeBox) { |
| return (SampleSizeBox) box; |
| } |
| } |
| return null; |
| } |
| |
| public SampleToChunkBox getSampleToChunkBox() { |
| for (Box box : boxes) { |
| if (box instanceof SampleToChunkBox) { |
| return (SampleToChunkBox) box; |
| } |
| } |
| return null; |
| } |
| |
| public ChunkOffsetBox getChunkOffsetBox() { |
| for (Box box : boxes) { |
| if (box instanceof ChunkOffsetBox) { |
| return (ChunkOffsetBox) box; |
| } |
| } |
| return null; |
| } |
| |
| public void setChunkOffsetBox(ChunkOffsetBox b) { |
| for (int i = 0; i < boxes.size(); i++) { |
| Box box = boxes.get(i); |
| if (box instanceof ChunkOffsetBox) { |
| boxes.set(i, b); |
| } |
| } |
| } |
| |
| public TimeToSampleBox getTimeToSampleBox() { |
| for (Box box : boxes) { |
| if (box instanceof TimeToSampleBox) { |
| return (TimeToSampleBox) box; |
| } |
| } |
| return null; |
| } |
| |
| public SyncSampleBox getSyncSampleBox() { |
| for (Box box : boxes) { |
| if (box instanceof SyncSampleBox) { |
| return (SyncSampleBox) box; |
| } |
| } |
| return null; |
| } |
| |
| public CompositionTimeToSample getCompositionTimeToSample() { |
| for (Box box : boxes) { |
| if (box instanceof CompositionTimeToSample) { |
| return (CompositionTimeToSample) box; |
| } |
| } |
| return null; |
| } |
| |
| public SampleDependencyTypeBox getSampleDependencyTypeBox() { |
| for (Box box : boxes) { |
| if (box instanceof SampleDependencyTypeBox) { |
| return (SampleDependencyTypeBox) box; |
| } |
| } |
| return null; |
| } |
| |
| } |