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Dynamic resolution change for VP8 HW encode.

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Off by default for now.

BUG=
R=glaznev@webrtc.org, stefan@webrtc.org
TBR=mflodman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/45849004

Cr-Commit-Position: refs/heads/master@{#9045}
This commit is contained in:
jackychen
2015-04-21 15:30:11 -07:00
parent 5464a6e548
commit 61b4d518af
17 changed files with 222 additions and 94 deletions
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60
webrtc/modules/video_coding/utility/include/quality_scaler.h Normal file
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/*
* 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/include/moving_average.h"
namespace webrtc {
class QualityScaler {
public:
struct Resolution {
int width;
int height;
};
QualityScaler();
void Init(int max_qp);
void SetMinResolution(int min_width, int min_height);
void ReportFramerate(int framerate);
// Report QP for SW encoder, report framesize fluctuation for HW encoder,
// only one of these two functions should be called, framesize fluctuation
// is to be used only if qp isn't available.
void ReportNormalizedQP(int qp);
void ReportNormalizedFrameSizeFluctuation(double framesize_deviation);
void ReportDroppedFrame();
void Reset(int framerate, int bitrate, int width, int height);
Resolution GetScaledResolution(const I420VideoFrame& frame);
const I420VideoFrame& GetScaledFrame(const I420VideoFrame& frame);
private:
void AdjustScale(bool up);
void ClearSamples();
Scaler scaler_;
I420VideoFrame scaled_frame_;
size_t num_samples_;
int target_framesize_;
int low_qp_threshold_;
MovingAverage<int> framedrop_percent_;
MovingAverage<double> frame_quality_;
int downscale_shift_;
int min_width_;
int min_height_;
};
} // namespace webrtc
#endif // WEBRTC_MODULES_VIDEO_CODING_UTILITY_QUALITY_SCALER_H_