diff options
Diffstat (limited to 'src/com/android/tv/tuner/exoplayer/audio/AudioDecoder.java')
-rw-r--r-- | src/com/android/tv/tuner/exoplayer/audio/AudioDecoder.java | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/com/android/tv/tuner/exoplayer/audio/AudioDecoder.java b/src/com/android/tv/tuner/exoplayer/audio/AudioDecoder.java new file mode 100644 index 00000000..e581092a --- /dev/null +++ b/src/com/android/tv/tuner/exoplayer/audio/AudioDecoder.java @@ -0,0 +1,70 @@ +/* + * 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; + } +} |