chromium/third_party/webrtc/video/adaptation/video_stream_encoder_resource_manager.h

/*
 *  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_VIDEO_STREAM_ENCODER_RESOURCE_MANAGER_H_
#define VIDEO_ADAPTATION_VIDEO_STREAM_ENCODER_RESOURCE_MANAGER_H_

#include <atomic>
#include <map>
#include <memory>
#include <string>
#include <unordered_map>
#include <utility>
#include <vector>

#include "absl/types/optional.h"
#include "api/adaptation/resource.h"
#include "api/field_trials_view.h"
#include "api/rtp_parameters.h"
#include "api/scoped_refptr.h"
#include "api/task_queue/task_queue_base.h"
#include "api/video/video_adaptation_counters.h"
#include "api/video/video_adaptation_reason.h"
#include "api/video/video_frame.h"
#include "api/video/video_source_interface.h"
#include "api/video_codecs/video_codec.h"
#include "api/video_codecs/video_encoder.h"
#include "call/adaptation/resource_adaptation_processor_interface.h"
#include "call/adaptation/video_stream_adapter.h"
#include "call/adaptation/video_stream_input_state_provider.h"
#include "rtc_base/experiments/quality_scaler_settings.h"
#include "rtc_base/ref_count.h"
#include "rtc_base/strings/string_builder.h"
#include "rtc_base/synchronization/mutex.h"
#include "rtc_base/thread_annotations.h"
#include "system_wrappers/include/clock.h"
#include "video/adaptation/balanced_constraint.h"
#include "video/adaptation/bandwidth_quality_scaler_resource.h"
#include "video/adaptation/bitrate_constraint.h"
#include "video/adaptation/encode_usage_resource.h"
#include "video/adaptation/overuse_frame_detector.h"
#include "video/adaptation/pixel_limit_resource.h"
#include "video/adaptation/quality_scaler_resource.h"
#include "video/adaptation/video_stream_encoder_resource.h"
#include "video/config/video_encoder_config.h"
#include "video/video_stream_encoder_observer.h"

namespace webrtc {

// The assumed input frame size if we have not yet received a frame.
// TODO(hbos): This is 144p - why are we assuming super low quality? Seems like
// a bad heuristic.
extern const int kDefaultInputPixelsWidth;
extern const int kDefaultInputPixelsHeight;

// Owns adaptation-related Resources pertaining to a single VideoStreamEncoder
// and passes on the relevant input from the encoder to the resources. The
// resources provide resource usage states to the ResourceAdaptationProcessor
// which is responsible for reconfiguring streams in order not to overuse
// resources.
//
// The manager is also involved with various mitigations not part of the
// ResourceAdaptationProcessor code such as the initial frame dropping.
class VideoStreamEncoderResourceManager
    : public VideoSourceRestrictionsListener,
      public ResourceLimitationsListener { … };

}  // namespace webrtc

#endif  // VIDEO_ADAPTATION_VIDEO_STREAM_ENCODER_RESOURCE_MANAGER_H_