1 files changed, 64 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp8/vp8_ratectrl_rtc.h b/media/libvpx/libvpx/vp8/vp8_ratectrl_rtc.h
new file mode 100644
index 0000000000..59fb607526
--- /dev/null
+++ b/media/libvpx/libvpx/vp8/vp8_ratectrl_rtc.h
@@ -0,0 +1,64 @@
+/*
+ *  Copyright (c) 2021 The WebM 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 VPX_VP8_RATECTRL_RTC_H_
+#define VPX_VP8_RATECTRL_RTC_H_
+
+#include <cstdint>
+#include <cstring>
+#include <memory>
+
+#include "vpx/internal/vpx_ratectrl_rtc.h"
+
+struct VP8_COMP;
+
+namespace libvpx {
+struct VP8RateControlRtcConfig : public VpxRateControlRtcConfig {
+ public:
+  VP8RateControlRtcConfig() {
+    memset(&layer_target_bitrate, 0, sizeof(layer_target_bitrate));
+    memset(&ts_rate_decimator, 0, sizeof(ts_rate_decimator));
+  }
+};
+
+struct VP8FrameParamsQpRTC {
+  RcFrameType frame_type;
+  int temporal_layer_id;
+};
+
+class VP8RateControlRTC {
+ public:
+  static std::unique_ptr<VP8RateControlRTC> Create(
+      const VP8RateControlRtcConfig &cfg);
+  ~VP8RateControlRTC();
+
+  bool UpdateRateControl(const VP8RateControlRtcConfig &rc_cfg);
+  // GetQP() needs to be called after ComputeQP() to get the latest QP
+  int GetQP() const;
+  // GetLoopfilterLevel() needs to be called after ComputeQP() since loopfilter
+  // level is calculated from frame qp.
+  int GetLoopfilterLevel() const;
+  // ComputeQP computes the QP if the frame is not dropped (kOk return),
+  // otherwise it returns kDrop and subsequent GetQP and PostEncodeUpdate
+  // are not to be called.
+  FrameDropDecision ComputeQP(const VP8FrameParamsQpRTC &frame_params);
+  // Feedback to rate control with the size of current encoded frame
+  void PostEncodeUpdate(uint64_t encoded_frame_size);
+
+ private:
+  VP8RateControlRTC() {}
+  bool InitRateControl(const VP8RateControlRtcConfig &cfg);
+  struct VP8_COMP *cpi_;
+  int q_;
+};
+
+}  // namespace libvpx
+
+#endif  // VPX_VP8_RATECTRL_RTC_H_