Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 47 insertions, 0 deletions

diff --git a/third_party/libwebrtc/modules/congestion_controller/goog_cc/congestion_window_pushback_controller.h b/third_party/libwebrtc/modules/congestion_controller/goog_cc/congestion_window_pushback_controller.h
new file mode 100644
index 0000000000..c18d9c686f
--- /dev/null
+++ b/third_party/libwebrtc/modules/congestion_controller/goog_cc/congestion_window_pushback_controller.h
@@ -0,0 +1,47 @@
+/*
+ *  Copyright (c) 2018 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_CONGESTION_CONTROLLER_GOOG_CC_CONGESTION_WINDOW_PUSHBACK_CONTROLLER_H_
+#define MODULES_CONGESTION_CONTROLLER_GOOG_CC_CONGESTION_WINDOW_PUSHBACK_CONTROLLER_H_
+
+#include <stdint.h>
+
+#include "absl/types/optional.h"
+#include "api/field_trials_view.h"
+#include "api/units/data_size.h"
+
+namespace webrtc {
+
+// This class enables pushback from congestion window directly to video encoder.
+// When the congestion window is filling up, the video encoder target bitrate
+// will be reduced accordingly to accommodate the network changes. To avoid
+// pausing video too frequently, a minimum encoder target bitrate threshold is
+// used to prevent video pause due to a full congestion window.
+class CongestionWindowPushbackController {
+ public:
+  explicit CongestionWindowPushbackController(
+      const FieldTrialsView* key_value_config);
+  void UpdateOutstandingData(int64_t outstanding_bytes);
+  void UpdatePacingQueue(int64_t pacing_bytes);
+  uint32_t UpdateTargetBitrate(uint32_t bitrate_bps);
+  void SetDataWindow(DataSize data_window);
+
+ private:
+  const bool add_pacing_;
+  const uint32_t min_pushback_target_bitrate_bps_;
+  absl::optional<DataSize> current_data_window_;
+  int64_t outstanding_bytes_ = 0;
+  int64_t pacing_bytes_ = 0;
+  double encoding_rate_ratio_ = 1.0;
+};
+
+}  // namespace webrtc
+
+#endif  // MODULES_CONGESTION_CONTROLLER_GOOG_CC_CONGESTION_WINDOW_PUSHBACK_CONTROLLER_H_