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/*
* 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 {
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;
// GetUVDeltaQP() needs to be called after ComputeQP() to get the latest
// delta QP for UV.
UVDeltaQP GetUVDeltaQP() 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() = default;
bool InitRateControl(const VP8RateControlRtcConfig &cfg);
struct VP8_COMP *cpi_ = nullptr;
int q_ = -1;
};
} // namespace libvpx
#endif // VPX_VP8_RATECTRL_RTC_H_