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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 <stdint.h>
#include <map>
#include <memory>
#include <vector>
#include "api/video/video_bitrate_allocator.h"
#include "api/video_codecs/video_encoder.h"
#include "common_types.h" // NOLINT(build/include)
#include "rtc_base/constructormagic.h"
namespace webrtc {
class SimulcastRateAllocator : public VideoBitrateAllocator {
public:
explicit SimulcastRateAllocator(const VideoCodec& codec);
~SimulcastRateAllocator() override;
VideoBitrateAllocation GetAllocation(uint32_t total_bitrate_bps,
uint32_t framerate) override;
const VideoCodec& GetCodec() const;
static float GetTemporalRateAllocation(int num_layers, int temporal_id);
private:
void DistributeAllocationToSimulcastLayers(
uint32_t total_bitrate_bps,
VideoBitrateAllocation* allocated_bitrates_bps);
void DistributeAllocationToTemporalLayers(
uint32_t framerate,
VideoBitrateAllocation* allocated_bitrates_bps) const;
std::vector<uint32_t> DefaultTemporalLayerAllocation(int bitrate_kbps,
int max_bitrate_kbps,
int framerate,
int simulcast_id) const;
std::vector<uint32_t> ScreenshareTemporalLayerAllocation(
int bitrate_kbps,
int max_bitrate_kbps,
int framerate,
int simulcast_id) const;
int NumTemporalStreams(size_t simulcast_id) const;
const VideoCodec codec_;
const double hysteresis_factor_;
std::vector<bool> stream_enabled_;
RTC_DISALLOW_COPY_AND_ASSIGN(SimulcastRateAllocator);
};
} // namespace webrtc
#endif // MODULES_VIDEO_CODING_UTILITY_SIMULCAST_RATE_ALLOCATOR_H_
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