1 files changed, 79 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SampleStream.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SampleStream.java
new file mode 100644
index 0000000000..54a7d0f895
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SampleStream.java
@@ -0,0 +1,79 @@
+/*
+ * 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;
+
+import org.mozilla.thirdparty.com.google.android.exoplayer2.C;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer;
+import java.io.IOException;
+
+/**
+ * A stream of media samples (and associated format information).
+ */
+public interface SampleStream {
+
+  /**
+   * Returns whether data is available to be read.
+   * <p>
+   * Note: If the stream has ended then a buffer with the end of stream flag can always be read from
+   * {@link #readData(FormatHolder, DecoderInputBuffer, boolean)}. Hence an ended stream is always
+   * ready.
+   *
+   * @return Whether data is available to be read.
+   */
+  boolean isReady();
+
+  /**
+   * Throws an error that's preventing data from being read. Does nothing if no such error exists.
+   *
+   * @throws IOException The underlying error.
+   */
+  void maybeThrowError() throws IOException;
+
+  /**
+   * Attempts to read from the stream.
+   *
+   * <p>If the stream has ended then {@link C#BUFFER_FLAG_END_OF_STREAM} flag is set on {@code
+   * buffer} and {@link C#RESULT_BUFFER_READ} is returned. Else if no data is available then {@link
+   * C#RESULT_NOTHING_READ} is returned. Else if the format of the media is changing or if {@code
+   * formatRequired} is set then {@code formatHolder} is populated and {@link C#RESULT_FORMAT_READ}
+   * is returned. Else {@code buffer} is populated and {@link C#RESULT_BUFFER_READ} is returned.
+   *
+   * @param formatHolder A {@link FormatHolder} to populate in the case of reading a format.
+   * @param buffer A {@link DecoderInputBuffer} to populate in the case of reading a sample or the
+   *     end of the stream. If the end of the stream has been reached, the {@link
+   *     C#BUFFER_FLAG_END_OF_STREAM} flag will be set on the buffer. If a {@link
+   *     DecoderInputBuffer#isFlagsOnly() flags-only} buffer is passed, then no {@link
+   *     DecoderInputBuffer#data} will be read and the read position of the stream will not change,
+   *     but the flags of the buffer will be populated.
+   * @param formatRequired Whether the caller requires that the format of the stream be read even if
+   *     it's not changing. A sample will never be read if set to true, however it is still possible
+   *     for the end of stream or nothing to be read.
+   * @return The result, which can be {@link C#RESULT_NOTHING_READ}, {@link C#RESULT_FORMAT_READ} or
+   *     {@link C#RESULT_BUFFER_READ}.
+   */
+  int readData(FormatHolder formatHolder, DecoderInputBuffer buffer, boolean formatRequired);
+
+  /**
+   * Attempts to skip to the keyframe before the specified position, or to the end of the stream if
+   * {@code positionUs} is beyond it.
+   *
+   * @param positionUs The specified time.
+   * @return The number of samples that were skipped.
+   */
+  int skipData(long positionUs);
+
+}