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/*
* Copyright (C) 2017 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 com.android.tv.tuner.exoplayer.audio;
import com.google.android.exoplayer.ExoPlaybackException;
import com.google.android.exoplayer.MediaFormat;
import com.google.android.exoplayer.SampleHolder;
import java.nio.ByteBuffer;
/** A base class for audio decoders. */
public abstract class AudioDecoder {
/**
* Decodes an audio sample.
*
* @param sampleHolder a holder that contains the sample data and corresponding metadata
*/
public abstract void decode(SampleHolder sampleHolder);
/** Returns a decoded sample from decoder. */
public abstract ByteBuffer getDecodedSample();
/** Returns the presentation time for the decoded sample. */
public abstract long getDecodedTimeUs();
/**
* Clear previous decode state if any. Prepares to decode samples of the specified encoding.
* This method should be called before using decode.
*
* @param mime audio encoding
*/
public abstract void resetDecoderState(String mimeType);
/** Releases all the resource. */
public abstract void release();
/**
* Init decoder if needed.
*
* @param format the format used to initialize decoder
*/
public void maybeInitDecoder(MediaFormat format) throws ExoPlaybackException {
// Do nothing.
}
/** Returns input buffer that will be used in decoder. */
public ByteBuffer getInputBuffer() {
return null;
}
/** Returns the output format. */
public android.media.MediaFormat getOutputFormat() {
return null;
}
}
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