b33a7186e6
Bug: webrtc:11999 Change-Id: I4eae0b8e9749d5bf51482b58cc58606c28fd7318 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/186305 Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Reviewed-by: Philip Eliasson <philipel@webrtc.org> Cr-Commit-Position: refs/heads/master@{#32289}
70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
/*
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* Copyright (c) 2020 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_AV1_SCALABILITY_STRUCTURE_L2T2_H_
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#define MODULES_VIDEO_CODING_CODECS_AV1_SCALABILITY_STRUCTURE_L2T2_H_
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#include <vector>
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#include "api/transport/rtp/dependency_descriptor.h"
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#include "common_video/generic_frame_descriptor/generic_frame_info.h"
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#include "modules/video_coding/codecs/av1/scalable_video_controller.h"
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namespace webrtc {
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// S1T1 0 0
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// /| /| /
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// S1T0 0-+-0-+-0
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// | | | | | ...
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// S0T1 | 0 | 0 |
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// |/ |/ |/
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// S0T0 0---0---0--
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// Time-> 0 1 2 3 4
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class ScalabilityStructureL2T2 : public ScalableVideoController {
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public:
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~ScalabilityStructureL2T2() override;
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StreamLayersConfig StreamConfig() const override;
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FrameDependencyStructure DependencyStructure() const override;
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std::vector<LayerFrameConfig> NextFrameConfig(bool restart) override;
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absl::optional<GenericFrameInfo> OnEncodeDone(
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LayerFrameConfig config) override;
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void OnRatesUpdated(const VideoBitrateAllocation& bitrates) override;
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private:
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enum FramePattern {
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kKey,
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kDeltaT1,
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kDeltaT0,
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};
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static constexpr int kNumSpatialLayers = 2;
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static constexpr int kNumTemporalLayers = 2;
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// Index of the buffer to store last frame for layer (`sid`, `tid`)
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static constexpr int BufferIndex(int sid, int tid) {
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return tid * kNumSpatialLayers + sid;
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}
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bool DecodeTargetIsActive(int sid, int tid) const {
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return active_decode_targets_[sid * kNumTemporalLayers + tid];
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}
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void SetDecodeTargetIsActive(int sid, int tid, bool value) {
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active_decode_targets_.set(sid * kNumTemporalLayers + tid, value);
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}
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FramePattern next_pattern_ = kKey;
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bool use_temporal_dependency_on_t0_[kNumSpatialLayers] = {false, false};
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std::bitset<32> active_decode_targets_ = 0b1111;
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};
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} // namespace webrtc
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#endif // MODULES_VIDEO_CODING_CODECS_AV1_SCALABILITY_STRUCTURE_L2T2_H_
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