diff options
Diffstat (limited to 'isoparser/src/main/java/com/coremedia/iso/boxes/TrackBox.java')
-rw-r--r-- | isoparser/src/main/java/com/coremedia/iso/boxes/TrackBox.java | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/isoparser/src/main/java/com/coremedia/iso/boxes/TrackBox.java b/isoparser/src/main/java/com/coremedia/iso/boxes/TrackBox.java new file mode 100644 index 0000000..c2806b5 --- /dev/null +++ b/isoparser/src/main/java/com/coremedia/iso/boxes/TrackBox.java @@ -0,0 +1,71 @@ +/* + * 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; + +/** + * Tracks are used for two purposes: (a) to contain media data (media tracks) and (b) to contain packetization + * information for streaming protocols (hint tracks). <br> + * There shall be at least one media track within an ISO file, and all the media tracks that contributed to the hint + * tracks shall remain in the file, even if the media data within them is not referenced by the hint tracks; after + * deleting all hint tracks, the entire un-hinted presentation shall remain. + */ +public class TrackBox extends AbstractContainerBox { + public static final String TYPE = "trak"; + + public TrackBox() { + super(TYPE); + } + + public TrackHeaderBox getTrackHeaderBox() { + for (Box box : boxes) { + if (box instanceof TrackHeaderBox) { + return (TrackHeaderBox) box; + } + } + return null; + } + + /** + * Gets the SampleTableBox at mdia/minf/stbl if existing. + * + * @return the SampleTableBox or <code>null</code> + */ + public SampleTableBox getSampleTableBox() { + MediaBox mdia = getMediaBox(); + if (mdia != null) { + MediaInformationBox minf = mdia.getMediaInformationBox(); + if (minf != null) { + return minf.getSampleTableBox(); + } + } + return null; + + } + + + public MediaBox getMediaBox() { + for (Box box : boxes) { + if (box instanceof MediaBox) { + return (MediaBox) box; + } + } + return null; + } + +} |