a0d7827b16
BUG=3712 R=marpan@google.com, stefan@webrtc.org Review URL: https://webrtc-codereview.appspot.com/18169004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@7164 4adac7df-926f-26a2-2b94-8c16560cd09d
66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
/*
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* Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_MODULES_VIDEO_CODING_UTILITY_QUALITY_SCALER_H_
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#define WEBRTC_MODULES_VIDEO_CODING_UTILITY_QUALITY_SCALER_H_
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#include <list>
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#include "webrtc/common_video/libyuv/include/scaler.h"
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namespace webrtc {
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class QualityScaler {
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public:
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struct Resolution {
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int width;
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int height;
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};
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QualityScaler();
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void Init(int max_qp);
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void ReportFramerate(int framerate);
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void ReportEncodedFrame(int qp);
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void ReportDroppedFrame();
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Resolution GetScaledResolution(const I420VideoFrame& frame);
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const I420VideoFrame& GetScaledFrame(const I420VideoFrame& frame);
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private:
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class MovingAverage {
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public:
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MovingAverage();
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void AddSample(int sample);
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bool GetAverage(size_t num_samples, int* average);
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void Reset();
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private:
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int sum_;
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std::list<int> samples_;
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};
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void AdjustScale(bool up);
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void ClearSamples();
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Scaler scaler_;
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I420VideoFrame scaled_frame_;
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size_t num_samples_;
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int low_qp_threshold_;
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MovingAverage average_qp_;
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MovingAverage framedrop_percent_;
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int downscale_shift_;
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_VIDEO_CODING_UTILITY_QUALITY_SCALER_H_
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