quality_scaler_resource.h

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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_QUALITY_SCALER_RESOURCE_H_

#define VIDEO_ADAPTATION_QUALITY_SCALER_RESOURCE_H_

#include <memory>

#include <queue>

#include <string>

#include "absl/types/optional.h"

#include "api/field_trials_view.h"

#include "api/scoped_refptr.h"

#include "api/video/video_adaptation_reason.h"

#include "api/video_codecs/video_encoder.h"

#include "call/adaptation/degradation_preference_provider.h"

#include "call/adaptation/resource_adaptation_processor_interface.h"

#include "modules/video_coding/utility/quality_scaler.h"

#include "video/adaptation/video_stream_encoder_resource.h"

namespace webrtc {

// Handles interaction with the QualityScaler.

class QualityScalerResource : public VideoStreamEncoderResource,

                              public QualityScalerQpUsageHandlerInterface {

 public:

  static rtc::scoped_refptr<QualityScalerResource> Create();

  QualityScalerResource();

  ~QualityScalerResource() override;

  bool is_started() const;

  void StartCheckForOveruse(VideoEncoder::QpThresholds qp_thresholds,

                            const FieldTrialsView& field_trials);

  void StopCheckForOveruse();

  void SetQpThresholds(VideoEncoder::QpThresholds qp_thresholds);

  void OnEncodeCompleted(const EncodedImage& encoded_image,

                         int64_t time_sent_in_us);

  void OnFrameDropped(EncodedImageCallback::DropReason reason);

  // QualityScalerQpUsageHandlerInterface implementation.

  void OnReportQpUsageHigh() override;

  void OnReportQpUsageLow() override;

 private:

  std::unique_ptr<QualityScaler> quality_scaler_

      RTC_GUARDED_BY(encoder_queue());

};

}  // namespace webrtc

#endif  // VIDEO_ADAPTATION_QUALITY_SCALER_RESOURCE_H_