Enabling spatial layers in VP9Impl. Filter layers in the loopback test.

webrtc/test/layer_filtering_transport.h

Index: webrtc/test/layer_filtering_transport.h
diff --git a/webrtc/test/layer_filtering_transport.h b/webrtc/test/layer_filtering_transport.h
new file mode 100644
index 0000000000000000000000000000000000000000..96a2cba8a232c44f43b72978b024b9d311ddaabd
--- /dev/null
+++ b/webrtc/test/layer_filtering_transport.h
@@ -0,0 +1,43 @@
+/*
+ *  Copyright (c) 2015 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.
+ */
+#ifndef WEBRTC_TEST_LAYER_FILTERING_TRANSPORT_H_
+#define WEBRTC_TEST_LAYER_FILTERING_TRANSPORT_H_
+
+#include "webrtc/test/direct_transport.h"
+#include "webrtc/test/fake_network_pipe.h"
+
+namespace webrtc {
+
+namespace test {
+
+class LayerFilteringTransport : public test::DirectTransport {
+ public:
+  LayerFilteringTransport(const FakeNetworkPipe::Config& config,
+                          uint8_t vp8_video_payload_type,
+                          uint8_t vp9_video_payload_type,
+                          uint8_t tl_discard_threshold,
+                          uint8_t sl_discard_threshold);
+  bool SendRtp(const uint8_t* data, size_t length) override;
+
+ private:
+  // Used to distinguish between VP8 and VP9.
+  const uint8_t vp8_video_payload_type_;
+  const uint8_t vp9_video_payload_type_;
+  // Discard all temporal/spatial layers with id greater or equal the
+  // threshold. 0 to disable.
+  const uint8_t tl_discard_threshold_;
+  const uint8_t sl_discard_threshold_;
+  uint16_t current_seq_num_;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // WEBRTC_TEST_LAYER_FILTERING_TRANSPORT_H_