3c6eac2860
Framerate-reduction code is disabled on all platforms, and this code adds complexity. It's necessary to react fast, especially on mobile platforms or other bad network conditions and framerate reduction adds another step between HD and QVGA. BUG=webrtc:5678, webrtc:5830 R=jackychen@webrtc.org, mflodman@webrtc.org Review URL: https://codereview.webrtc.org/1885893002 . Cr-Commit-Position: refs/heads/master@{#12503}
67 lines
1.9 KiB
C++
67 lines
1.9 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 "webrtc/common_video/libyuv/include/scaler.h"
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#include "webrtc/modules/video_coding/utility/moving_average.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 low_qp_threshold,
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int high_qp_threshold,
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int initial_bitrate_kbps,
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int width,
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int height,
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int fps);
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void ReportFramerate(int framerate);
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void ReportQP(int qp);
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void ReportDroppedFrame();
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void OnEncodeFrame(const VideoFrame& frame);
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Resolution GetScaledResolution() const;
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const VideoFrame& GetScaledFrame(const VideoFrame& frame);
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int downscale_shift() const { return downscale_shift_; }
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private:
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void AdjustScale(bool up);
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void UpdateTargetResolution(int frame_width, int frame_height);
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void ClearSamples();
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void UpdateSampleCounts();
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Scaler scaler_;
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VideoFrame scaled_frame_;
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size_t num_samples_downscale_;
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size_t num_samples_upscale_;
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int measure_seconds_upscale_;
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MovingAverage<int> average_qp_upscale_;
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MovingAverage<int> average_qp_downscale_;
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int framerate_;
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int low_qp_threshold_;
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int high_qp_threshold_;
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MovingAverage<int> framedrop_percent_;
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Resolution res_;
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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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