1 files changed, 35 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/video_coding/svc/create_scalability_structure.h b/third_party/libwebrtc/modules/video_coding/svc/create_scalability_structure.h
new file mode 100644
index 0000000000..3b67443693
--- /dev/null
+++ b/third_party/libwebrtc/modules/video_coding/svc/create_scalability_structure.h
@@ -0,0 +1,35 @@
+/*
+ *  Copyright (c) 2020 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 MODULES_VIDEO_CODING_SVC_CREATE_SCALABILITY_STRUCTURE_H_
+#define MODULES_VIDEO_CODING_SVC_CREATE_SCALABILITY_STRUCTURE_H_
+
+#include <memory>
+#include <vector>
+
+#include "absl/types/optional.h"
+#include "api/video_codecs/scalability_mode.h"
+#include "modules/video_coding/svc/scalable_video_controller.h"
+
+namespace webrtc {
+
+// Creates a structure by name according to
+// https://w3c.github.io/webrtc-svc/#scalabilitymodes*
+// Returns nullptr for unknown name.
+std::unique_ptr<ScalableVideoController> CreateScalabilityStructure(
+    ScalabilityMode name);
+
+// Returns description of the scalability structure identified by 'name',
+// Return nullopt for unknown name.
+absl::optional<ScalableVideoController::StreamLayersConfig>
+ScalabilityStructureConfig(ScalabilityMode name);
+
+}  // namespace webrtc
+
+#endif  // MODULES_VIDEO_CODING_SVC_CREATE_SCALABILITY_STRUCTURE_H_