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277a656263
Bug: webrtc:9345 Change-Id: I5b1e0b4ed7a8c1d0b942b09433017cac6d53c64b Reviewed-on: https://webrtc-review.googlesource.com/79000 Commit-Queue: Michael Horowitz <mhoro@webrtc.org> Reviewed-by: Erik Språng <sprang@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23496}
49 lines
1.7 KiB
C++
49 lines
1.7 KiB
C++
/*
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* Copyright (c) 2018 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_CODECS_VP9_SVC_RATE_ALLOCATOR_H_
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#define MODULES_VIDEO_CODING_CODECS_VP9_SVC_RATE_ALLOCATOR_H_
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#include <stdint.h>
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#include <vector>
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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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namespace webrtc {
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extern const float kSpatialLayeringRateScalingFactor;
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extern const float kTemporalLayeringRateScalingFactor;
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class SvcRateAllocator : public VideoBitrateAllocator {
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public:
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explicit SvcRateAllocator(const VideoCodec& codec);
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VideoBitrateAllocation GetAllocation(uint32_t total_bitrate_bps,
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uint32_t framerate_fps) override;
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uint32_t GetPreferredBitrateBps(uint32_t framerate_fps) override;
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private:
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VideoBitrateAllocation GetAllocationNormalVideo(
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uint32_t total_bitrate_bps) const;
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VideoBitrateAllocation GetAllocationScreenSharing(
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uint32_t total_bitrate_bps) const;
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std::vector<size_t> SplitBitrate(size_t num_layers,
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size_t total_bitrate,
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float rate_scaling_factor) const;
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bool AdjustAndVerify(std::vector<size_t>* spatial_layer_bitrate_bps) const;
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const VideoCodec codec_;
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};
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} // namespace webrtc
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#endif // MODULES_VIDEO_CODING_CODECS_VP9_SVC_RATE_ALLOCATOR_H_
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