54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
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/*
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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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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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LayerFrameConfig KeyFrameConfig() const;
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FramePattern next_pattern_ = kKey;
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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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