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/*
* 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/units/data_rate.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_
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