usbtuner/src/com/android/usbtuner/exoplayer/MpegTsPassthroughAc3RendererBuilder.java

/*
 * 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.usbtuner.exoplayer;

import android.content.Context;
import android.media.MediaDataSource;

import com.google.android.exoplayer.SampleSource;
import com.google.android.exoplayer.TrackRenderer;
import com.android.usbtuner.exoplayer.MpegTsPlayer.RendererBuilder;
import com.android.usbtuner.exoplayer.MpegTsPlayer.RendererBuilderCallback;
import com.android.usbtuner.exoplayer.ac3.Ac3TrackRenderer;
import com.android.usbtuner.exoplayer.cache.CacheManager;
import com.android.usbtuner.tvinput.PlaybackCacheListener;

/**
 * Builder class for AC3 Passthrough track renderer objects.
 */
public class MpegTsPassthroughAc3RendererBuilder implements RendererBuilder {
    private final Context mContext;
    private final CacheManager mCacheManager;
    private final PlaybackCacheListener mCacheListener;

    public MpegTsPassthroughAc3RendererBuilder(Context context, CacheManager cacheManager,
            PlaybackCacheListener cacheListener) {
        mContext = context;
        mCacheManager = cacheManager;
        mCacheListener = cacheListener;
    }

    @Override
    public void buildRenderers(MpegTsPlayer mpegTsPlayer, MediaDataSource dataSource,
            RendererBuilderCallback callback) {
        // Build the video and audio renderers.
        SampleExtractor extractor = dataSource == null ?
                new MpegTsSampleSourceExtractor(mCacheManager, mCacheListener) :
                new MpegTsSampleSourceExtractor(dataSource, mCacheManager, mCacheListener);
        SampleSource sampleSource = new MpegTsSampleSource(extractor);
        MpegTsVideoTrackRenderer videoRenderer = new MpegTsVideoTrackRenderer(mContext,
                sampleSource, mpegTsPlayer.getMainHandler(), mpegTsPlayer);
        Ac3TrackRenderer audioRenderer = new Ac3TrackRenderer(sampleSource,
                mpegTsPlayer.getMainHandler(), mpegTsPlayer, false);
        Cea708TextTrackRenderer textRenderer = new Cea708TextTrackRenderer(sampleSource);

        TrackRenderer[] renderers = new TrackRenderer[MpegTsPlayer.RENDERER_COUNT];
        renderers[MpegTsPlayer.TRACK_TYPE_VIDEO] = videoRenderer;
        renderers[MpegTsPlayer.TRACK_TYPE_AUDIO] = audioRenderer;
        renderers[MpegTsPlayer.TRACK_TYPE_TEXT] = textRenderer;
        callback.onRenderers(null, renderers);
    }
}