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96e3b991da
Bug: webrtc:12338 Change-Id: I72fcb505a92f03b2ace7160ee33d555a977eddfd Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/226955 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Artem Titov <titovartem@webrtc.org> Cr-Commit-Position: refs/heads/master@{#34587}
65 lines
2 KiB
C++
65 lines
2 KiB
C++
/*
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* Copyright 2018 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 RTC_BASE_EXPERIMENTS_CPU_SPEED_EXPERIMENT_H_
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#define RTC_BASE_EXPERIMENTS_CPU_SPEED_EXPERIMENT_H_
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#include <vector>
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#include "absl/types/optional.h"
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#include "rtc_base/experiments/field_trial_parser.h"
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namespace webrtc {
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class CpuSpeedExperiment {
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public:
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CpuSpeedExperiment();
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~CpuSpeedExperiment();
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// Example:
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// WebRTC-VP8-CpuSpeed-Arm/pixels:100|200|300,cpu_speed:-1|-2|-3/
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// pixels <= 100 -> cpu speed: -1
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// pixels <= 200 -> cpu speed: -2
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// pixels <= 300 -> cpu speed: -3
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// WebRTC-VP8-CpuSpeed-Arm/pixels:100|200|300,cpu_speed:-1|-2|-3/,
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// cpu_speed_le_cores:-4|-5|-6,cores:3/
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// If `num_cores` > 3
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// pixels <= 100 -> cpu speed: -1
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// pixels <= 200 -> cpu speed: -2
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// pixels <= 300 -> cpu speed: -3
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// else
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// pixels <= 100 -> cpu speed: -4
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// pixels <= 200 -> cpu speed: -5
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// pixels <= 300 -> cpu speed: -6
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struct Config {
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int pixels = 0; // The video frame size.
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int cpu_speed = 0; // The `cpu_speed` to be used if the frame size is less
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// than or equal to `pixels`.
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// Optional.
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int cpu_speed_le_cores = 0; // Same as `cpu_speed` above but only used if
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// `num_cores` <= `cores_`.
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};
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// Gets the cpu speed based on `pixels` and `num_cores`.
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absl::optional<int> GetValue(int pixels, int num_cores) const;
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private:
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std::vector<Config> configs_;
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// Threshold for when to use `cpu_speed_le_cores`.
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FieldTrialOptional<int> cores_;
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};
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} // namespace webrtc
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#endif // RTC_BASE_EXPERIMENTS_CPU_SPEED_EXPERIMENT_H_
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