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/*
* Copyright 2020 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 VIDEO_ADAPTATION_BALANCED_CONSTRAINT_H_
#define VIDEO_ADAPTATION_BALANCED_CONSTRAINT_H_
#include <string>
#include "absl/types/optional.h"
#include "api/field_trials_view.h"
#include "api/sequence_checker.h"
#include "call/adaptation/adaptation_constraint.h"
#include "call/adaptation/degradation_preference_provider.h"
#include "rtc_base/experiments/balanced_degradation_settings.h"
#include "rtc_base/system/no_unique_address.h"
namespace webrtc {
class BalancedConstraint : public AdaptationConstraint {
public:
BalancedConstraint(
DegradationPreferenceProvider* degradation_preference_provider,
const FieldTrialsView& field_trials);
~BalancedConstraint() override = default;
void OnEncoderTargetBitrateUpdated(
absl::optional<uint32_t> encoder_target_bitrate_bps);
// AdaptationConstraint implementation.
std::string Name() const override { return "BalancedConstraint"; }
bool IsAdaptationUpAllowed(
const VideoStreamInputState& input_state,
const VideoSourceRestrictions& restrictions_before,
const VideoSourceRestrictions& restrictions_after) const override;
private:
RTC_NO_UNIQUE_ADDRESS SequenceChecker sequence_checker_;
absl::optional<uint32_t> encoder_target_bitrate_bps_
RTC_GUARDED_BY(&sequence_checker_);
const BalancedDegradationSettings balanced_settings_;
const DegradationPreferenceProvider* degradation_preference_provider_;
};
} // namespace webrtc
#endif // VIDEO_ADAPTATION_BALANCED_CONSTRAINT_H_
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