1 files changed, 63 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ByteArrayDataSink.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ByteArrayDataSink.java
new file mode 100644
index 0000000000..4aa66538ff
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ByteArrayDataSink.java
@@ -0,0 +1,63 @@
+/*
+ * 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.upstream;
+
+import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull;
+
+import androidx.annotation.Nullable;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.C;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
+
+/**
+ * A {@link DataSink} for writing to a byte array.
+ */
+public final class ByteArrayDataSink implements DataSink {
+
+  private @MonotonicNonNull ByteArrayOutputStream stream;
+
+  @Override
+  public void open(DataSpec dataSpec) {
+    if (dataSpec.length == C.LENGTH_UNSET) {
+      stream = new ByteArrayOutputStream();
+    } else {
+      Assertions.checkArgument(dataSpec.length <= Integer.MAX_VALUE);
+      stream = new ByteArrayOutputStream((int) dataSpec.length);
+    }
+  }
+
+  @Override
+  public void close() throws IOException {
+    castNonNull(stream).close();
+  }
+
+  @Override
+  public void write(byte[] buffer, int offset, int length) {
+    castNonNull(stream).write(buffer, offset, length);
+  }
+
+  /**
+   * Returns the data written to the sink since the last call to {@link #open(DataSpec)}, or null if
+   * {@link #open(DataSpec)} has never been called.
+   */
+  @Nullable
+  public byte[] getData() {
+    return stream == null ? null : stream.toByteArray();
+  }
+
+}