1 files changed, 91 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ByteArrayDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ByteArrayDataSource.java
new file mode 100644
index 0000000000..0be103701d
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ByteArrayDataSource.java
@@ -0,0 +1,91 @@
+/*
+ * 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 android.net.Uri;
+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.IOException;
+
+/** A {@link DataSource} for reading from a byte array. */
+public final class ByteArrayDataSource extends BaseDataSource {
+
+  private final byte[] data;
+
+  @Nullable private Uri uri;
+  private int readPosition;
+  private int bytesRemaining;
+  private boolean opened;
+
+  /**
+   * @param data The data to be read.
+   */
+  public ByteArrayDataSource(byte[] data) {
+    super(/* isNetwork= */ false);
+    Assertions.checkNotNull(data);
+    Assertions.checkArgument(data.length > 0);
+    this.data = data;
+  }
+
+  @Override
+  public long open(DataSpec dataSpec) throws IOException {
+    uri = dataSpec.uri;
+    transferInitializing(dataSpec);
+    readPosition = (int) dataSpec.position;
+    bytesRemaining = (int) ((dataSpec.length == C.LENGTH_UNSET)
+        ? (data.length - dataSpec.position) : dataSpec.length);
+    if (bytesRemaining <= 0 || readPosition + bytesRemaining > data.length) {
+      throw new IOException("Unsatisfiable range: [" + readPosition + ", " + dataSpec.length
+          + "], length: " + data.length);
+    }
+    opened = true;
+    transferStarted(dataSpec);
+    return bytesRemaining;
+  }
+
+  @Override
+  public int read(byte[] buffer, int offset, int readLength) {
+    if (readLength == 0) {
+      return 0;
+    } else if (bytesRemaining == 0) {
+      return C.RESULT_END_OF_INPUT;
+    }
+
+    readLength = Math.min(readLength, bytesRemaining);
+    System.arraycopy(data, readPosition, buffer, offset, readLength);
+    readPosition += readLength;
+    bytesRemaining -= readLength;
+    bytesTransferred(readLength);
+    return readLength;
+  }
+
+  @Override
+  @Nullable
+  public Uri getUri() {
+    return uri;
+  }
+
+  @Override
+  public void close() {
+    if (opened) {
+      opened = false;
+      transferEnded();
+    }
+    uri = null;
+  }
+
+}