Remove MultiTrackChunkSource (multi track now supported directly).

library/src/main/java/com/google/android/exoplayer/chunk/MultiTrackChunkSource.java

-/*
- * Copyright (C) 2014 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.google.android.exoplayer.chunk;
-
-import com.google.android.exoplayer.ExoPlaybackException;
-import com.google.android.exoplayer.ExoPlayer.ExoPlayerComponent;
-import com.google.android.exoplayer.MediaFormat;
-import com.google.android.exoplayer.dash.DashChunkSource;
-import com.google.android.exoplayer.smoothstreaming.SmoothStreamingChunkSource;
-import com.google.android.exoplayer.util.Assertions;
-
-import java.io.IOException;
-import java.util.List;
-
-/**
- * A {@link ChunkSource} providing the ability to switch between multiple other {@link ChunkSource}
- * instances.
- *
- * @deprecated {@link DashChunkSource} and {@link SmoothStreamingChunkSource} both support multiple
- *     tracks directly, so use of this class should not be required. It will be deleted once legacy
- *     uses have been removed.
- */
-@Deprecated
-public final class MultiTrackChunkSource implements ChunkSource, ExoPlayerComponent {
-
-  /**
-   * A message to indicate a source selection. Source selection can only be performed when the
-   * source is disabled.
-   */
-  public static final int MSG_SELECT_TRACK = 1;
-
-  private final ChunkSource[] allSources;
-
-  private ChunkSource selectedSource;
-  private boolean enabled;
-
-  public MultiTrackChunkSource(ChunkSource... sources) {
-    this.allSources = sources;
-    this.selectedSource = sources[0];
-  }
-
-  public MultiTrackChunkSource(List<ChunkSource> sources) {
-    this(toChunkSourceArray(sources));
-  }
-
-  /**
-   * Gets the number of tracks that this source can switch between. May be called safely from any
-   * thread.
-   *
-   * @return The number of tracks.
-   */
-  public int getMultiTrackCount() {
-    return allSources.length;
-  }
-
-  @Override
-  public boolean prepare() {
-    boolean prepared = true;
-    for (int i = 0; i < allSources.length; i++) {
-      prepared &= allSources[i].prepare();
-    }
-    return prepared;
-  }
-
-  @Override
-  public int getTrackCount() {
-    return selectedSource.getTrackCount();
-  }
-
-  @Override
-  public MediaFormat getFormat(int track) {
-    return selectedSource.getFormat(track);
-  }
-
-  @Override
-  public void enable(int track) {
-    selectedSource.enable(track);
-    enabled = true;
-  }
-
-  @Override
-  public void disable(List<? extends MediaChunk> queue) {
-    selectedSource.disable(queue);
-    enabled = false;
-  }
-
-  @Override
-  public void continueBuffering(long playbackPositionUs) {
-    selectedSource.continueBuffering(playbackPositionUs);
-  }
-
-  @Override
-  public void getChunkOperation(List<? extends MediaChunk> queue, long seekPositionUs,
-      long playbackPositionUs, ChunkOperationHolder out) {
-    selectedSource.getChunkOperation(queue, seekPositionUs, playbackPositionUs, out);
-  }
-
-  @Override
-  public void maybeThrowError() throws IOException {
-    selectedSource.maybeThrowError();
-  }
-
-  @Override
-  public void handleMessage(int what, Object msg) throws ExoPlaybackException {
-    Assertions.checkState(!enabled);
-    if (what == MSG_SELECT_TRACK) {
-      selectedSource = allSources[(Integer) msg];
-    }
-  }
-
-  @Override
-  public void onChunkLoadCompleted(Chunk chunk) {
-    selectedSource.onChunkLoadCompleted(chunk);
-  }
-
-  @Override
-  public void onChunkLoadError(Chunk chunk, Exception e) {
-    selectedSource.onChunkLoadError(chunk, e);
-  }
-
-  private static ChunkSource[] toChunkSourceArray(List<ChunkSource> sources) {
-    ChunkSource[] chunkSourceArray = new ChunkSource[sources.size()];
-    sources.toArray(chunkSourceArray);
-    return chunkSourceArray;
-  }
-
-}