Make base classes for native video encoder/decoder public

Implementers of Java wrappers for native encoders need to have the same
implementation of all the unsupported methods, as mentioned in the
documentation of VideoEncoder.createNativeVideoEncoder (and its decoder
equivalent).

This simplifies implementation of such encoders/decoders, and also make sure
they don’t override unsupported methods, as they are guaranteed not to be
called.

Bug: None
Change-Id: Iaa8499eda1b52cc14b04622bea2766cd09ba43e6
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/160186
Reviewed-by: Sami Kalliomäki <sakal@webrtc.org>
Commit-Queue: Xavier Lepaul <xalep@google.com>
Cr-Commit-Position: refs/heads/master@{#29866}
diff --git a/sdk/android/api/org/webrtc/WrappedNativeVideoDecoder.java b/sdk/android/api/org/webrtc/WrappedNativeVideoDecoder.java
new file mode 100644
index 0000000..b70c664
--- /dev/null
+++ b/sdk/android/api/org/webrtc/WrappedNativeVideoDecoder.java
@@ -0,0 +1,43 @@
+/*
+ *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+package org.webrtc;
+
+/**
+ * Wraps a native webrtc::VideoDecoder.
+ */
+public abstract class WrappedNativeVideoDecoder implements VideoDecoder {
+  @Override public abstract long createNativeVideoDecoder();
+
+  @Override
+  public final VideoCodecStatus initDecode(Settings settings, Callback decodeCallback) {
+    throw new UnsupportedOperationException("Not implemented.");
+  }
+
+  @Override
+  public final VideoCodecStatus release() {
+    throw new UnsupportedOperationException("Not implemented.");
+  }
+
+  @Override
+  public final VideoCodecStatus decode(EncodedImage frame, DecodeInfo info) {
+    throw new UnsupportedOperationException("Not implemented.");
+  }
+
+  @Override
+  public final boolean getPrefersLateDecoding() {
+    throw new UnsupportedOperationException("Not implemented.");
+  }
+
+  @Override
+  public final String getImplementationName() {
+    throw new UnsupportedOperationException("Not implemented.");
+  }
+}
diff --git a/sdk/android/api/org/webrtc/WrappedNativeVideoEncoder.java b/sdk/android/api/org/webrtc/WrappedNativeVideoEncoder.java
new file mode 100644
index 0000000..7d0908a
--- /dev/null
+++ b/sdk/android/api/org/webrtc/WrappedNativeVideoEncoder.java
@@ -0,0 +1,49 @@
+/*
+ *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+package org.webrtc;
+
+/**
+ * Wraps a native webrtc::VideoEncoder.
+ */
+public abstract class WrappedNativeVideoEncoder implements VideoEncoder {
+  @Override public abstract long createNativeVideoEncoder();
+  @Override public abstract boolean isHardwareEncoder();
+
+  @Override
+  public final VideoCodecStatus initEncode(Settings settings, Callback encodeCallback) {
+    throw new UnsupportedOperationException("Not implemented.");
+  }
+
+  @Override
+  public final VideoCodecStatus release() {
+    throw new UnsupportedOperationException("Not implemented.");
+  }
+
+  @Override
+  public final VideoCodecStatus encode(VideoFrame frame, EncodeInfo info) {
+    throw new UnsupportedOperationException("Not implemented.");
+  }
+
+  @Override
+  public final VideoCodecStatus setRateAllocation(BitrateAllocation allocation, int framerate) {
+    throw new UnsupportedOperationException("Not implemented.");
+  }
+
+  @Override
+  public final ScalingSettings getScalingSettings() {
+    throw new UnsupportedOperationException("Not implemented.");
+  }
+
+  @Override
+  public final String getImplementationName() {
+    throw new UnsupportedOperationException("Not implemented.");
+  }
+}