| /* |
| * Copyright (c) 2014 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 WEBRTC_MODULES_VIDEO_CODING_UTILITY_QUALITY_SCALER_H_ |
| #define WEBRTC_MODULES_VIDEO_CODING_UTILITY_QUALITY_SCALER_H_ |
| |
| #include "webrtc/common_video/libyuv/include/scaler.h" |
| #include "webrtc/modules/video_coding/utility/moving_average.h" |
| |
| namespace webrtc { |
| class QualityScaler { |
| public: |
| static const int kDefaultLowQpDenominator; |
| static const int kDefaultMinDownscaleDimension; |
| struct Resolution { |
| int width; |
| int height; |
| }; |
| |
| QualityScaler(); |
| void Init(int low_qp_threshold, |
| int high_qp_threshold, |
| bool use_framerate_reduction); |
| void SetMinResolution(int min_width, int min_height); |
| void ReportFramerate(int framerate); |
| void ReportQP(int qp); |
| void ReportDroppedFrame(); |
| void Reset(int framerate, int bitrate, int width, int height); |
| void OnEncodeFrame(const VideoFrame& frame); |
| Resolution GetScaledResolution() const; |
| const VideoFrame& GetScaledFrame(const VideoFrame& frame); |
| int GetTargetFramerate() const; |
| int downscale_shift() const { return downscale_shift_; } |
| |
| private: |
| void AdjustScale(bool up); |
| void ClearSamples(); |
| |
| Scaler scaler_; |
| VideoFrame scaled_frame_; |
| |
| size_t num_samples_; |
| int framerate_; |
| int target_framerate_; |
| int low_qp_threshold_; |
| int high_qp_threshold_; |
| MovingAverage<int> framedrop_percent_; |
| MovingAverage<int> average_qp_; |
| Resolution res_; |
| |
| int downscale_shift_; |
| int framerate_down_; |
| bool use_framerate_reduction_; |
| int min_width_; |
| int min_height_; |
| }; |
| |
| } // namespace webrtc |
| |
| #endif // WEBRTC_MODULES_VIDEO_CODING_UTILITY_QUALITY_SCALER_H_ |