1 files changed, 37 insertions, 0 deletions
diff --git a/third_party/libwebrtc/api/video_codecs/simulcast_stream.cc b/third_party/libwebrtc/api/video_codecs/simulcast_stream.cc
new file mode 100644
index 0000000000..312429ef9f
--- /dev/null
+++ b/third_party/libwebrtc/api/video_codecs/simulcast_stream.cc
@@ -0,0 +1,37 @@
+/*
+ *  Copyright (c) 2022 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.
+ */
+
+#include "api/video_codecs/simulcast_stream.h"
+
+#include "rtc_base/checks.h"
+
+namespace webrtc {
+
+unsigned char SimulcastStream::GetNumberOfTemporalLayers() const {
+  return numberOfTemporalLayers;
+}
+void SimulcastStream::SetNumberOfTemporalLayers(unsigned char n) {
+  RTC_DCHECK_GE(n, 1);
+  RTC_DCHECK_LE(n, 3);
+  numberOfTemporalLayers = n;
+}
+
+ScalabilityMode SimulcastStream::GetScalabilityMode() const {
+  RTC_CHECK_GE(numberOfTemporalLayers, 1);
+  RTC_CHECK_LE(numberOfTemporalLayers, 3);
+  static const ScalabilityMode scalability_modes[3] = {
+      ScalabilityMode::kL1T1,
+      ScalabilityMode::kL1T2,
+      ScalabilityMode::kL1T3,
+  };
+  return scalability_modes[numberOfTemporalLayers - 1];
+}
+
+}  // namespace webrtc