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0040b66ad3
This is a no-op change because rtc::Optional is an alias to absl::optional
This CL generated by running script from modules with parameters
'pacing video_coding congestion_controller remote_bitrate_estimator':
find $@ -type f \( -name \*.h -o -name \*.cc \) \
-exec sed -i 's|rtc::Optional|absl::optional|g' {} \+ \
-exec sed -i 's|rtc::nullopt|absl::nullopt|g' {} \+ \
-exec sed -i 's|#include "api/optional.h"|#include "absl/types/optional.h"|' {} \+
find $@ -type f -name BUILD.gn \
-exec sed -r -i 's|"(../)*api:optional"|"//third_party/abseil-cpp/absl/types:optional"|' {} \+;
git cl format
Bug: webrtc:9078
Change-Id: I8ea501d7f1ee36e8d8cd3ed37e6b763c7fe29118
Reviewed-on: https://webrtc-review.googlesource.com/83900
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23640}
95 lines
3.7 KiB
C++
95 lines
3.7 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 MODULES_VIDEO_CODING_UTILITY_QUALITY_SCALER_H_
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#define MODULES_VIDEO_CODING_UTILITY_QUALITY_SCALER_H_
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#include <memory>
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#include <utility>
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#include "absl/types/optional.h"
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#include "api/video_codecs/video_encoder.h"
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#include "common_types.h" // NOLINT(build/include)
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#include "modules/video_coding/utility/moving_average.h"
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#include "rtc_base/experiments/quality_scaling_experiment.h"
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#include "rtc_base/sequenced_task_checker.h"
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namespace webrtc {
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// An interface for signaling requests to limit or increase the resolution or
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// framerate of the captured video stream.
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class AdaptationObserverInterface {
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public:
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// Indicates if the adaptation is due to overuse of the CPU resources, or if
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// the quality of the encoded frames have dropped too low.
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enum AdaptReason : size_t { kQuality = 0, kCpu = 1 };
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static const size_t kScaleReasonSize = 2;
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// Called to signal that we can handle larger or more frequent frames.
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virtual void AdaptUp(AdaptReason reason) = 0;
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// Called to signal that the source should reduce the resolution or framerate.
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virtual void AdaptDown(AdaptReason reason) = 0;
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protected:
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virtual ~AdaptationObserverInterface() {}
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};
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// QualityScaler runs asynchronously and monitors QP values of encoded frames.
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// It holds a reference to an AdaptationObserverInterface implementation to
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// signal an intent to scale up or down.
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class QualityScaler {
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public:
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// Construct a QualityScaler with given |thresholds| and |observer|.
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// This starts the quality scaler periodically checking what the average QP
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// has been recently.
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QualityScaler(AdaptationObserverInterface* observer,
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VideoEncoder::QpThresholds thresholds);
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virtual ~QualityScaler();
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// Should be called each time a frame is dropped at encoding.
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void ReportDroppedFrameByMediaOpt();
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void ReportDroppedFrameByEncoder();
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// Inform the QualityScaler of the last seen QP.
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void ReportQp(int qp);
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// The following members declared protected for testing purposes.
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protected:
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QualityScaler(AdaptationObserverInterface* observer,
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VideoEncoder::QpThresholds thresholds,
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int64_t sampling_period_ms);
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private:
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class CheckQpTask;
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class QpSmoother;
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void CheckQp();
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void ClearSamples();
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void ReportQpLow();
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void ReportQpHigh();
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int64_t GetSamplingPeriodMs() const;
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CheckQpTask* check_qp_task_ RTC_GUARDED_BY(&task_checker_);
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AdaptationObserverInterface* const observer_ RTC_GUARDED_BY(&task_checker_);
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rtc::SequencedTaskChecker task_checker_;
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const VideoEncoder::QpThresholds thresholds_;
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const int64_t sampling_period_ms_;
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bool fast_rampup_ RTC_GUARDED_BY(&task_checker_);
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MovingAverage average_qp_ RTC_GUARDED_BY(&task_checker_);
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MovingAverage framedrop_percent_media_opt_ RTC_GUARDED_BY(&task_checker_);
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MovingAverage framedrop_percent_all_ RTC_GUARDED_BY(&task_checker_);
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// Used by QualityScalingExperiment.
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const bool experiment_enabled_;
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QualityScalingExperiment::Config config_ RTC_GUARDED_BY(&task_checker_);
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std::unique_ptr<QpSmoother> qp_smoother_high_ RTC_GUARDED_BY(&task_checker_);
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std::unique_ptr<QpSmoother> qp_smoother_low_ RTC_GUARDED_BY(&task_checker_);
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bool observed_enough_frames_ RTC_GUARDED_BY(&task_checker_);
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};
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} // namespace webrtc
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#endif // MODULES_VIDEO_CODING_UTILITY_QUALITY_SCALER_H_
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