encode_usage_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_ENCODE_USAGE_RESOURCE_H_

#define VIDEO_ADAPTATION_ENCODE_USAGE_RESOURCE_H_

#include <memory>

#include <string>

#include "absl/types/optional.h"

#include "api/scoped_refptr.h"

#include "api/video/video_adaptation_reason.h"

#include "video/adaptation/overuse_frame_detector.h"

#include "video/adaptation/video_stream_encoder_resource.h"

namespace webrtc {

// Handles interaction with the OveruseDetector.

// TODO(hbos): Add unittests specific to this class, it is currently only tested

// indirectly by usage in the ResourceAdaptationProcessor (which is only tested

// because of its usage in VideoStreamEncoder); all tests are currently in

// video_stream_encoder_unittest.cc.

class EncodeUsageResource : public VideoStreamEncoderResource,

                            public OveruseFrameDetectorObserverInterface {

 public:

  static rtc::scoped_refptr<EncodeUsageResource> Create(

      std::unique_ptr<OveruseFrameDetector> overuse_detector);

  explicit EncodeUsageResource(

      std::unique_ptr<OveruseFrameDetector> overuse_detector);

  ~EncodeUsageResource() override;

  bool is_started() const;

  void StartCheckForOveruse(CpuOveruseOptions options);

  void StopCheckForOveruse();

  void SetTargetFrameRate(absl::optional<double> target_frame_rate);

  void OnEncodeStarted(const VideoFrame& cropped_frame,

                       int64_t time_when_first_seen_us);

  void OnEncodeCompleted(uint32_t timestamp,

                         int64_t time_sent_in_us,

                         int64_t capture_time_us,

                         absl::optional<int> encode_duration_us);

  // OveruseFrameDetectorObserverInterface implementation.

  void AdaptUp() override;

  void AdaptDown() override;

 private:

  int TargetFrameRateAsInt();

  const std::unique_ptr<OveruseFrameDetector> overuse_detector_

      RTC_GUARDED_BY(encoder_queue());

  bool is_started_ RTC_GUARDED_BY(encoder_queue());

  absl::optional<double> target_frame_rate_ RTC_GUARDED_BY(encoder_queue());

};

}  // namespace webrtc

#endif  // VIDEO_ADAPTATION_ENCODE_USAGE_RESOURCE_H_