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/*
* Copyright (c) 2019 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 RTC_BASE_EXPERIMENTS_QUALITY_RAMPUP_EXPERIMENT_H_
#define RTC_BASE_EXPERIMENTS_QUALITY_RAMPUP_EXPERIMENT_H_
#include "absl/types/optional.h"
#include "api/field_trials_view.h"
#include "rtc_base/experiments/field_trial_parser.h"
namespace webrtc {
class QualityRampupExperiment final {
public:
static QualityRampupExperiment ParseSettings();
absl::optional<int> MinPixels() const;
absl::optional<int> MinDurationMs() const;
absl::optional<double> MaxBitrateFactor() const;
// Sets the max bitrate and the frame size.
// The call has no effect if the frame size is less than `min_pixels_`.
void SetMaxBitrate(int pixels, uint32_t max_bitrate_kbps);
// Returns true if the available bandwidth is a certain percentage
// (max_bitrate_factor_) above `max_bitrate_kbps_` for `min_duration_ms_`.
bool BwHigh(int64_t now_ms, uint32_t available_bw_kbps);
void Reset();
bool Enabled() const;
private:
explicit QualityRampupExperiment(
const FieldTrialsView* const key_value_config);
FieldTrialOptional<int> min_pixels_;
FieldTrialOptional<int> min_duration_ms_;
FieldTrialOptional<double> max_bitrate_factor_;
absl::optional<int64_t> start_ms_;
absl::optional<uint32_t> max_bitrate_kbps_;
};
} // namespace webrtc
#endif // RTC_BASE_EXPERIMENTS_QUALITY_RAMPUP_EXPERIMENT_H_
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