1 files changed, 100 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/BaseMediaChunk.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/BaseMediaChunk.java
new file mode 100644
index 0000000000..406cd1617a
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/BaseMediaChunk.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2016 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 org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk;
+
+import androidx.annotation.Nullable;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.C;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.Format;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec;
+
+/**
+ * A base implementation of {@link MediaChunk} that outputs to a {@link BaseMediaChunkOutput}.
+ */
+public abstract class BaseMediaChunk extends MediaChunk {
+
+  /**
+   * The time from which output will begin, or {@link C#TIME_UNSET} if output will begin from the
+   * start of the chunk.
+   */
+  public final long clippedStartTimeUs;
+  /**
+   * The time from which output will end, or {@link C#TIME_UNSET} if output will end at the end of
+   * the chunk.
+   */
+  public final long clippedEndTimeUs;
+
+  private BaseMediaChunkOutput output;
+  private int[] firstSampleIndices;
+
+  /**
+   * @param dataSource The source from which the data should be loaded.
+   * @param dataSpec Defines the data to be loaded.
+   * @param trackFormat See {@link #trackFormat}.
+   * @param trackSelectionReason See {@link #trackSelectionReason}.
+   * @param trackSelectionData See {@link #trackSelectionData}.
+   * @param startTimeUs The start time of the media contained by the chunk, in microseconds.
+   * @param endTimeUs The end time of the media contained by the chunk, in microseconds.
+   * @param clippedStartTimeUs The time in the chunk from which output will begin, or {@link
+   *     C#TIME_UNSET} to output from the start of the chunk.
+   * @param clippedEndTimeUs The time in the chunk from which output will end, or {@link
+   *     C#TIME_UNSET} to output to the end of the chunk.
+   * @param chunkIndex The index of the chunk, or {@link C#INDEX_UNSET} if it is not known.
+   */
+  public BaseMediaChunk(
+      DataSource dataSource,
+      DataSpec dataSpec,
+      Format trackFormat,
+      int trackSelectionReason,
+      @Nullable Object trackSelectionData,
+      long startTimeUs,
+      long endTimeUs,
+      long clippedStartTimeUs,
+      long clippedEndTimeUs,
+      long chunkIndex) {
+    super(dataSource, dataSpec, trackFormat, trackSelectionReason, trackSelectionData, startTimeUs,
+        endTimeUs, chunkIndex);
+    this.clippedStartTimeUs = clippedStartTimeUs;
+    this.clippedEndTimeUs = clippedEndTimeUs;
+  }
+
+  /**
+   * Initializes the chunk for loading, setting the {@link BaseMediaChunkOutput} that will receive
+   * samples as they are loaded.
+   *
+   * @param output The output that will receive the loaded media samples.
+   */
+  public void init(BaseMediaChunkOutput output) {
+    this.output = output;
+    firstSampleIndices = output.getWriteIndices();
+  }
+
+  /**
+   * Returns the index of the first sample in the specified track of the output that will originate
+   * from this chunk.
+   */
+  public final int getFirstSampleIndex(int trackIndex) {
+    return firstSampleIndices[trackIndex];
+  }
+
+  /**
+   * Returns the output most recently passed to {@link #init(BaseMediaChunkOutput)}.
+   */
+  protected final BaseMediaChunkOutput getOutput() {
+    return output;
+  }
+
+}