a957570d62
This is believed to be more reliable in real-world cases. The camera seems to fall behind sooner than the encoder starts taking too long time encoding, so this is believed to be an earlier trigger. BUG=2325 R=asapersson@webrtc.org, mflodman@webrtc.org Review URL: https://webrtc-codereview.appspot.com/2140004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@4648 4adac7df-926f-26a2-2b94-8c16560cd09d
89 lines
2.2 KiB
C++
89 lines
2.2 KiB
C++
/*
|
|
* Copyright (c) 2013 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_VIDEO_ENGINE_OVERUSE_FRAME_DETECTOR_H_
|
|
#define WEBRTC_VIDEO_ENGINE_OVERUSE_FRAME_DETECTOR_H_
|
|
|
|
#include "webrtc/modules/interface/module.h"
|
|
#include "webrtc/system_wrappers/interface/constructor_magic.h"
|
|
#include "webrtc/system_wrappers/interface/scoped_ptr.h"
|
|
|
|
namespace webrtc {
|
|
|
|
class Clock;
|
|
class CriticalSectionWrapper;
|
|
class CpuOveruseObserver;
|
|
|
|
// TODO(pbos): Move this somewhere appropriate
|
|
class Statistics {
|
|
public:
|
|
Statistics();
|
|
|
|
void AddSample(double sample);
|
|
void Reset();
|
|
|
|
double Mean() const;
|
|
double Variance() const;
|
|
double StdDev() const;
|
|
uint64_t Samples() const;
|
|
|
|
private:
|
|
double sum_;
|
|
double sum_squared_;
|
|
uint64_t count_;
|
|
};
|
|
|
|
// Use to detect system overuse based on jitter in incoming frames.
|
|
class OveruseFrameDetector : public Module {
|
|
public:
|
|
explicit OveruseFrameDetector(Clock* clock);
|
|
~OveruseFrameDetector();
|
|
|
|
// Registers an observer receiving overuse and underuse callbacks. Set
|
|
// 'observer' to NULL to disable callbacks.
|
|
void SetObserver(CpuOveruseObserver* observer);
|
|
|
|
// Called for each captured frame.
|
|
void FrameCaptured();
|
|
|
|
// Implements Module.
|
|
virtual int32_t TimeUntilNextProcess() OVERRIDE;
|
|
virtual int32_t Process() OVERRIDE;
|
|
|
|
private:
|
|
bool IsOverusing();
|
|
bool IsUnderusing(int64_t time_now);
|
|
|
|
// Protecting all members.
|
|
scoped_ptr<CriticalSectionWrapper> crit_;
|
|
|
|
// Observer getting overuse reports.
|
|
CpuOveruseObserver* observer_;
|
|
|
|
Clock* clock_;
|
|
int64_t next_process_time_;
|
|
|
|
Statistics capture_deltas_;
|
|
int64_t last_capture_time_;
|
|
|
|
int64_t last_overuse_time_;
|
|
int checks_above_threshold_;
|
|
|
|
int64_t last_rampup_time_;
|
|
bool in_quick_rampup_;
|
|
int current_rampup_delay_ms_;
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(OveruseFrameDetector);
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // WEBRTC_VIDEO_ENGINE_OVERUSE_FRAME_DETECTOR_H_
|