478681e1e6
Also provide a new set of thresholds for the VideoToolbox encoder. The new thresholds were experimentally determined to work well on the iPhone 6S, and also adequately on the iPhone 5S. BUG=webrtc:5678 Review-Url: https://codereview.webrtc.org/2309743002 Cr-Commit-Position: refs/heads/master@{#14420}
72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
/*
|
|
* 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_types.h"
|
|
#include "webrtc/common_video/include/i420_buffer_pool.h"
|
|
#include "webrtc/modules/video_coding/utility/moving_average.h"
|
|
|
|
namespace webrtc {
|
|
class QualityScaler {
|
|
public:
|
|
struct Resolution {
|
|
int width;
|
|
int height;
|
|
};
|
|
|
|
QualityScaler();
|
|
void Init(VideoCodecType codec_type,
|
|
int initial_bitrate_kbps,
|
|
int width,
|
|
int height,
|
|
int fps);
|
|
void Init(int low_qp_threshold,
|
|
int high_qp_threshold,
|
|
int initial_bitrate_kbps,
|
|
int width,
|
|
int height,
|
|
int fps);
|
|
void ReportFramerate(int framerate);
|
|
void ReportQP(int qp);
|
|
void ReportDroppedFrame();
|
|
void OnEncodeFrame(int width, int height);
|
|
Resolution GetScaledResolution() const;
|
|
rtc::scoped_refptr<VideoFrameBuffer> GetScaledBuffer(
|
|
const rtc::scoped_refptr<VideoFrameBuffer>& frame);
|
|
int downscale_shift() const { return downscale_shift_; }
|
|
|
|
private:
|
|
void ClearSamples();
|
|
void ScaleUp();
|
|
void ScaleDown();
|
|
void UpdateTargetResolution(int width, int height);
|
|
|
|
I420BufferPool pool_;
|
|
|
|
size_t num_samples_downscale_;
|
|
size_t num_samples_upscale_;
|
|
bool fast_rampup_;
|
|
MovingAverage average_qp_;
|
|
MovingAverage framedrop_percent_;
|
|
|
|
int low_qp_threshold_;
|
|
int high_qp_threshold_;
|
|
Resolution target_res_;
|
|
|
|
int downscale_shift_;
|
|
int maximum_shift_;
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // WEBRTC_MODULES_VIDEO_CODING_UTILITY_QUALITY_SCALER_H_
|