| /* |
| * Copyright (C) 2015 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; |
| |
| import com.google.android.exoplayer.MediaFormat; |
| import com.google.android.exoplayer.MediaFormatHolder; |
| import com.google.android.exoplayer.MediaFormatUtil; |
| import com.google.android.exoplayer.SampleHolder; |
| import com.android.tv.tuner.exoplayer.buffer.BufferManager; |
| import com.android.tv.tuner.exoplayer.buffer.RecordingSampleBuffer; |
| import com.android.tv.tuner.tvinput.PlaybackBufferListener; |
| |
| import android.os.Handler; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * A class that plays a recorded stream without using {@link android.media.MediaExtractor}, |
| * since all samples are extracted and stored to the permanent storage already. |
| */ |
| public class FileSampleExtractor implements SampleExtractor{ |
| private static final String TAG = "FileSampleExtractor"; |
| private static final boolean DEBUG = false; |
| |
| private int mTrackCount; |
| private boolean mReleased; |
| |
| private final List<MediaFormat> mTrackFormats = new ArrayList<>(); |
| private final BufferManager mBufferManager; |
| private final PlaybackBufferListener mBufferListener; |
| private BufferManager.SampleBuffer mSampleBuffer; |
| |
| public FileSampleExtractor( |
| BufferManager bufferManager, PlaybackBufferListener bufferListener) { |
| mBufferManager = bufferManager; |
| mBufferListener = bufferListener; |
| mTrackCount = -1; |
| } |
| |
| @Override |
| public void maybeThrowError() throws IOException { |
| // Do nothing. |
| } |
| |
| @Override |
| public boolean prepare() throws IOException { |
| List<BufferManager.TrackFormat> trackFormatList = mBufferManager.readTrackInfoFiles(); |
| if (trackFormatList == null || trackFormatList.isEmpty()) { |
| throw new IOException("Cannot find meta files for the recording."); |
| } |
| mTrackCount = trackFormatList.size(); |
| List<String> ids = new ArrayList<>(); |
| mTrackFormats.clear(); |
| for (int i = 0; i < mTrackCount; ++i) { |
| BufferManager.TrackFormat trackFormat = trackFormatList.get(i); |
| ids.add(trackFormat.trackId); |
| mTrackFormats.add(MediaFormatUtil.createMediaFormat(trackFormat.format)); |
| } |
| mSampleBuffer = new RecordingSampleBuffer(mBufferManager, mBufferListener, true, |
| RecordingSampleBuffer.BUFFER_REASON_RECORDED_PLAYBACK); |
| mSampleBuffer.init(ids, mTrackFormats); |
| return true; |
| } |
| |
| @Override |
| public List<MediaFormat> getTrackFormats() { |
| return mTrackFormats; |
| } |
| |
| @Override |
| public void getTrackMediaFormat(int track, MediaFormatHolder outMediaFormatHolder) { |
| outMediaFormatHolder.format = mTrackFormats.get(track); |
| outMediaFormatHolder.drmInitData = null; |
| } |
| |
| @Override |
| public void release() { |
| if (!mReleased) { |
| if (mSampleBuffer != null) { |
| try { |
| mSampleBuffer.release(); |
| } catch (IOException e) { |
| // Do nothing. Playback ends now. |
| } |
| } |
| } |
| mReleased = true; |
| } |
| |
| @Override |
| public void selectTrack(int index) { |
| mSampleBuffer.selectTrack(index); |
| } |
| |
| @Override |
| public void deselectTrack(int index) { |
| mSampleBuffer.deselectTrack(index); |
| } |
| |
| @Override |
| public long getBufferedPositionUs() { |
| return mSampleBuffer.getBufferedPositionUs(); |
| } |
| |
| @Override |
| public void seekTo(long positionUs) { |
| mSampleBuffer.seekTo(positionUs); |
| } |
| |
| @Override |
| public int readSample(int track, SampleHolder sampleHolder) { |
| return mSampleBuffer.readSample(track, sampleHolder); |
| } |
| |
| @Override |
| public boolean continueBuffering(long positionUs) { |
| return mSampleBuffer.continueBuffering(positionUs); |
| } |
| |
| @Override |
| public void setOnCompletionListener(OnCompletionListener listener, Handler handler) { } |
| } |