1 files changed, 58 insertions, 0 deletions
diff --git a/libtransport/src/protocols/rtc/rtc_rc.h b/libtransport/src/protocols/rtc/rtc_rc.h
new file mode 100644
index 000000000..34d090092
--- /dev/null
+++ b/libtransport/src/protocols/rtc/rtc_rc.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2017-2021 Cisco and/or its affiliates.
+ * 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.
+ */
+
+#pragma once
+#include <protocols/rtc/rtc_state.h>
+
+namespace transport {
+
+namespace protocol {
+
+namespace rtc {
+
+class RTCRateControl : public std::enable_shared_from_this<RTCRateControl> {
+ public:
+  RTCRateControl()
+      : rc_on_(false),
+        congestion_win_(1000000),  // init the win to a large number
+        congestion_state_(CongestionState::Normal),
+        protocol_state_(nullptr) {}
+
+  virtual ~RTCRateControl() = default;
+
+  void turnOnRateControl() { rc_on_ = true; }
+  void setState(std::shared_ptr<RTCState> state) { protocol_state_ = state; };
+  uint32_t getCongesionWindow() { return congestion_win_; };
+
+  virtual void onNewRound(double round_len) = 0;
+  virtual void onDataPacketReceived(
+      const core::ContentObject &content_object) = 0;
+
+ protected:
+  enum class CongestionState { Normal = 0, Underuse = 1, Congested = 2, Last };
+
+ protected:
+  bool rc_on_;
+  uint32_t congestion_win_;
+  CongestionState congestion_state_;
+
+  std::shared_ptr<RTCState> protocol_state_;
+};
+
+}  // end namespace rtc
+
+}  // end namespace protocol
+
+}  // end namespace transport