DolbyVisionConfig.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.extractor;
import androidx.annotation.Nullable;
import androidx.media3.common.util.ParsableByteArray;
import androidx.media3.common.util.UnstableApi;
/** Dolby Vision configuration data. */
@UnstableApi
public final class DolbyVisionConfig {
/**
* Parses Dolby Vision configuration data.
*
* @param data A {@link ParsableByteArray}, whose position is set to the start of the Dolby Vision
* configuration data to parse.
* @return The {@link DolbyVisionConfig} corresponding to the configuration, or {@code null} if
* the configuration isn't supported.
*/
@Nullable
public static DolbyVisionConfig parse(ParsableByteArray data) {
data.skipBytes(2); // dv_version_major, dv_version_minor
int profileData = data.readUnsignedByte();
int dvProfile = (profileData >> 1);
int dvLevel = ((profileData & 0x1) << 5) | ((data.readUnsignedByte() >> 3) & 0x1F);
String codecsPrefix;
if (dvProfile == 4 || dvProfile == 5 || dvProfile == 7) {
codecsPrefix = "dvhe";
} else if (dvProfile == 8) {
codecsPrefix = "hev1";
} else if (dvProfile == 9) {
codecsPrefix = "avc3";
} else {
return null;
}
String codecs = codecsPrefix + ".0" + dvProfile + (dvLevel < 10 ? ".0" : ".") + dvLevel;
return new DolbyVisionConfig(dvProfile, dvLevel, codecs);
}
/** The profile number. */
public final int profile;
/** The level number. */
public final int level;
/** The RFC 6381 codecs string. */
public final String codecs;
private DolbyVisionConfig(int profile, int level, String codecs) {
this.profile = profile;
this.level = level;
this.codecs = codecs;
}
}