simulcast_rate_allocator.h

Enable keyboard shortcuts

/*

 *  Copyright (c) 2016 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 MODULES_VIDEO_CODING_UTILITY_SIMULCAST_RATE_ALLOCATOR_H_

#define MODULES_VIDEO_CODING_UTILITY_SIMULCAST_RATE_ALLOCATOR_H_

#include <stddef.h>

#include <stdint.h>

#include <vector>

#include "api/environment/environment.h"

#include "api/video/video_bitrate_allocation.h"

#include "api/video/video_bitrate_allocator.h"

#include "api/video_codecs/video_codec.h"

#include "rtc_base/experiments/rate_control_settings.h"

#include "rtc_base/experiments/stable_target_rate_experiment.h"

namespace webrtc {

class SimulcastRateAllocator : public VideoBitrateAllocator {

 public:

  SimulcastRateAllocator(const Environment& env, const VideoCodec& codec);

  ~SimulcastRateAllocator() override;

  SimulcastRateAllocator(const SimulcastRateAllocator&) = delete;

  SimulcastRateAllocator& operator=(const SimulcastRateAllocator&) = delete;

  VideoBitrateAllocation Allocate(

      VideoBitrateAllocationParameters parameters) override;

  const VideoCodec& GetCodec() const;

  static float GetTemporalRateAllocation(int num_layers,

                                         int temporal_id,

                                         bool base_heavy_tl3_alloc);

  void SetLegacyConferenceMode(bool mode) override;

 private:

  void DistributeAllocationToSimulcastLayers(

      DataRate total_bitrate,

      DataRate stable_bitrate,

      VideoBitrateAllocation* allocated_bitrates);

  void DistributeAllocationToTemporalLayers(

      VideoBitrateAllocation* allocated_bitrates) const;

  std::vector<uint32_t> DefaultTemporalLayerAllocation(int bitrate_kbps,

                                                       int max_bitrate_kbps,

                                                       int simulcast_id) const;

  std::vector<uint32_t> ScreenshareTemporalLayerAllocation(

      int bitrate_kbps,

      int max_bitrate_kbps,

      int simulcast_id) const;

  int NumTemporalStreams(size_t simulcast_id) const;

  const VideoCodec codec_;

  const StableTargetRateExperiment stable_rate_settings_;

  const RateControlSettings rate_control_settings_;

  std::vector<bool> stream_enabled_;

  bool legacy_conference_mode_;

};

}  // namespace webrtc

#endif  // MODULES_VIDEO_CODING_UTILITY_SIMULCAST_RATE_ALLOCATOR_H_