mirror of
https://github.com/mollyim/webrtc.git
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d92288f5ba
Also adjust to base-layer fraction for the shortened 3-tl pattern to be 60%, just like the 2-tl setting. This CL removes direct use of the allocation matrix and moves it behind a static getter. Bug: webrtc:9477 Change-Id: Ifd7d1edffa0555024fd252834357b926997d13b5 Reviewed-on: https://webrtc-review.googlesource.com/86681 Commit-Queue: Erik Språng <sprang@webrtc.org> Reviewed-by: Rasmus Brandt <brandtr@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23834}
62 lines
2.1 KiB
C++
62 lines
2.1 KiB
C++
/*
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* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_VIDEO_CODING_UTILITY_SIMULCAST_RATE_ALLOCATOR_H_
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#define MODULES_VIDEO_CODING_UTILITY_SIMULCAST_RATE_ALLOCATOR_H_
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#include <stdint.h>
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#include <map>
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#include <memory>
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#include <vector>
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#include "api/video_codecs/video_encoder.h"
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#include "common_types.h" // NOLINT(build/include)
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#include "common_video/include/video_bitrate_allocator.h"
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#include "rtc_base/constructormagic.h"
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namespace webrtc {
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class SimulcastRateAllocator : public VideoBitrateAllocator {
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public:
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explicit SimulcastRateAllocator(const VideoCodec& codec);
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VideoBitrateAllocation GetAllocation(uint32_t total_bitrate_bps,
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uint32_t framerate) override;
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const VideoCodec& GetCodec() const;
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static float GetTemporalRateAllocation(int num_layers, int temporal_id);
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private:
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void DistributeAllocationToSimulcastLayers(
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uint32_t total_bitrate_bps,
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VideoBitrateAllocation* allocated_bitrates_bps) const;
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void DistributeAllocationToTemporalLayers(
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uint32_t framerate,
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VideoBitrateAllocation* allocated_bitrates_bps) const;
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std::vector<uint32_t> DefaultTemporalLayerAllocation(int bitrate_kbps,
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int max_bitrate_kbps,
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int framerate,
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int simulcast_id) const;
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std::vector<uint32_t> ScreenshareTemporalLayerAllocation(
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int bitrate_kbps,
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int max_bitrate_kbps,
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int framerate,
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int simulcast_id) const;
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int NumTemporalStreams(size_t simulcast_id) const;
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const VideoCodec codec_;
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RTC_DISALLOW_COPY_AND_ASSIGN(SimulcastRateAllocator);
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};
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} // namespace webrtc
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#endif // MODULES_VIDEO_CODING_UTILITY_SIMULCAST_RATE_ALLOCATOR_H_
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