MdtaMetadataEntry.java
/*
* Copyright (C) 2019 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 androidx.media3.container;
import android.os.Parcel;
import android.os.Parcelable;
import androidx.annotation.Nullable;
import androidx.media3.common.Metadata;
import androidx.media3.common.util.UnstableApi;
import androidx.media3.common.util.Util;
import java.util.Arrays;
/**
* Stores extensible metadata with handler type 'mdta'. See also the QuickTime File Format
* Specification.
*/
@UnstableApi
public final class MdtaMetadataEntry implements Metadata.Entry {
/** Key for the capture frame rate (in frames per second). */
public static final String KEY_ANDROID_CAPTURE_FPS = "com.android.capture.fps";
/** The type indicator for UTF-8 string. */
public static final int TYPE_INDICATOR_STRING = 1;
/** The type indicator for Float32. */
public static final int TYPE_INDICATOR_FLOAT32 = 23;
/** The type indicator for 32-bit signed integer. */
public static final int TYPE_INDICATOR_INT32 = 67;
/** The metadata key name. */
public final String key;
/** The payload. The interpretation of the value depends on {@link #typeIndicator}. */
public final byte[] value;
/** The four byte locale indicator. */
public final int localeIndicator;
/** The four byte type indicator. */
public final int typeIndicator;
/** Creates a new metadata entry for the specified metadata key/value. */
public MdtaMetadataEntry(String key, byte[] value, int localeIndicator, int typeIndicator) {
this.key = key;
this.value = value;
this.localeIndicator = localeIndicator;
this.typeIndicator = typeIndicator;
}
private MdtaMetadataEntry(Parcel in) {
key = Util.castNonNull(in.readString());
value = Util.castNonNull(in.createByteArray());
localeIndicator = in.readInt();
typeIndicator = in.readInt();
}
@Override
public boolean equals(@Nullable Object obj) {
if (this == obj) {
return true;
}
if (obj == null || getClass() != obj.getClass()) {
return false;
}
MdtaMetadataEntry other = (MdtaMetadataEntry) obj;
return key.equals(other.key)
&& Arrays.equals(value, other.value)
&& localeIndicator == other.localeIndicator
&& typeIndicator == other.typeIndicator;
}
@Override
public int hashCode() {
int result = 17;
result = 31 * result + key.hashCode();
result = 31 * result + Arrays.hashCode(value);
result = 31 * result + localeIndicator;
result = 31 * result + typeIndicator;
return result;
}
@Override
public String toString() {
String formattedValue;
switch (typeIndicator) {
case TYPE_INDICATOR_STRING:
formattedValue = Util.fromUtf8Bytes(value);
break;
case TYPE_INDICATOR_FLOAT32:
formattedValue = String.valueOf(Util.toFloat(value));
break;
case TYPE_INDICATOR_INT32:
formattedValue = String.valueOf(Util.toInteger(value));
break;
default:
formattedValue = Util.toHexString(value);
}
return "mdta: key=" + key + ", value=" + formattedValue;
}
// Parcelable implementation.
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(key);
dest.writeByteArray(value);
dest.writeInt(localeIndicator);
dest.writeInt(typeIndicator);
}
@Override
public int describeContents() {
return 0;
}
public static final Parcelable.Creator<MdtaMetadataEntry> CREATOR =
new Parcelable.Creator<MdtaMetadataEntry>() {
@Override
public MdtaMetadataEntry createFromParcel(Parcel in) {
return new MdtaMetadataEntry(in);
}
@Override
public MdtaMetadataEntry[] newArray(int size) {
return new MdtaMetadataEntry[size];
}
};
}