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/*
* Copyright 2015 The Android Open Source Project
*
* 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 android.media;
import android.annotation.NonNull;
import android.os.Parcel;
/**
* Class that embodies one timed metadata access unit, including
*
* <ul>
* <li> a time stamp, and </li>
* <li> raw uninterpreted byte-array extracted directly from the container. </li>
* </ul>
*
* @see MediaPlayer#setOnTimedMetaDataAvailableListener(android.media.MediaPlayer.OnTimedMetaDataAvailableListener)
*/
public final class TimedMetaData {
private static final String TAG = "TimedMetaData";
private long mTimestampUs;
private byte[] mMetaData;
/**
* @hide
*/
static TimedMetaData createTimedMetaDataFromParcel(Parcel parcel) {
return new TimedMetaData(parcel);
}
private TimedMetaData(Parcel parcel) {
if (!parseParcel(parcel)) {
throw new IllegalArgumentException("parseParcel() fails");
}
}
/**
* Constructor.
*
* @param timestampUs the timestamp in microsecond for the timed metadata
* @param metaData the metadata array for the timed metadata. No data copying is made.
* It should not be null.
*/
public TimedMetaData(long timestampUs, @NonNull byte[] metaData) {
if (metaData == null) {
throw new IllegalArgumentException("null metaData is not allowed");
}
mTimestampUs = timestampUs;
mMetaData = metaData;
}
/**
* @return the timestamp associated with this metadata access unit in microseconds;
* 0 denotes playback start.
*/
public long getTimestamp() {
return mTimestampUs;
}
/**
* @return raw, uninterpreted content of this metadata access unit; for ID3 tags this includes
* everything starting from the 3 byte signature "ID3".
*/
public byte[] getMetaData() {
return mMetaData;
}
private boolean parseParcel(Parcel parcel) {
parcel.setDataPosition(0);
if (parcel.dataAvail() == 0) {
return false;
}
mTimestampUs = parcel.readLong();
mMetaData = new byte[parcel.readInt()];
parcel.readByteArray(mMetaData);
return true;
}
}
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