AudioEncoderInfoImpl.java
/*
* Copyright 2022 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.camera.video.internal.encoder;
import android.media.MediaCodecInfo;
import android.util.Range;
import androidx.annotation.NonNull;
import androidx.annotation.RequiresApi;
import java.util.Objects;
/**
* AudioEncoderInfoImpl provides audio encoder related information and capabilities.
*
* <p>The implementation wraps and queries {@link MediaCodecInfo} relevant capability classes
* such as {@link MediaCodecInfo.CodecCapabilities}, {@link MediaCodecInfo.EncoderCapabilities}
* and {@link MediaCodecInfo.AudioCapabilities}.
*/
@RequiresApi(21) // TODO(b/200306659): Remove and replace with annotation on package-info.java
public class AudioEncoderInfoImpl extends EncoderInfoImpl implements AudioEncoderInfo {
private final MediaCodecInfo.AudioCapabilities mAudioCapabilities;
/**
* Returns an AudioEncoderInfoImpl from a AudioEncoderConfig.
*
* <p>The input AudioEncoderConfig is used to find the corresponding encoder.
*
* @throws InvalidConfigException if the encoder is not found.
*/
@NonNull
public static AudioEncoderInfoImpl from(@NonNull AudioEncoderConfig encoderConfig)
throws InvalidConfigException {
return new AudioEncoderInfoImpl(findCodecAndGetCodecInfo(encoderConfig),
encoderConfig.getMimeType());
}
AudioEncoderInfoImpl(@NonNull MediaCodecInfo codecInfo, @NonNull String mime)
throws InvalidConfigException {
super(codecInfo, mime);
mAudioCapabilities = Objects.requireNonNull(mCodecCapabilities.getAudioCapabilities());
}
@NonNull
@Override
public Range<Integer> getBitrateRange() {
return mAudioCapabilities.getBitrateRange();
}
}