1 /*
2  *  Copyright (c) 2020 The WebRTC project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 #ifndef MODULES_VIDEO_CODING_CODECS_AV1_SCALABILITY_STRUCTURE_S2T1_H_
11 #define MODULES_VIDEO_CODING_CODECS_AV1_SCALABILITY_STRUCTURE_S2T1_H_
12 
13 #include <vector>
14 
15 #include "api/transport/rtp/dependency_descriptor.h"
16 #include "common_video/generic_frame_descriptor/generic_frame_info.h"
17 #include "modules/video_coding/codecs/av1/scalable_video_controller.h"
18 
19 namespace webrtc {
20 
21 // S1  0--0--0-
22 //             ...
23 // S0  0--0--0-
24 class ScalabilityStructureS2T1 : public ScalableVideoController {
25  public:
26   ~ScalabilityStructureS2T1() override;
27 
28   StreamLayersConfig StreamConfig() const override;
29   FrameDependencyStructure DependencyStructure() const override;
30 
31   std::vector<LayerFrameConfig> NextFrameConfig(bool restart) override;
32   absl::optional<GenericFrameInfo> OnEncodeDone(
33       LayerFrameConfig config) override;
34 
35  private:
36   bool keyframe_ = true;
37 };
38 
39 }  // namespace webrtc
40 
41 #endif  // MODULES_VIDEO_CODING_CODECS_AV1_SCALABILITY_STRUCTURE_S2T1_H_
42