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_L3T3_H_ 11 #define MODULES_VIDEO_CODING_CODECS_AV1_SCALABILITY_STRUCTURE_L3T3_H_ 12 13 #include <vector> 14 15 #include "absl/types/optional.h" 16 #include "api/transport/rtp/dependency_descriptor.h" 17 #include "common_video/generic_frame_descriptor/generic_frame_info.h" 18 #include "modules/video_coding/codecs/av1/scalable_video_controller.h" 19 20 namespace webrtc { 21 22 // https://aomediacodec.github.io/av1-rtp-spec/#a63-l3t3-full-svc 23 class ScalabilityStructureL3T3 : public ScalableVideoController { 24 public: 25 ~ScalabilityStructureL3T3() override; 26 27 StreamLayersConfig StreamConfig() const override; 28 FrameDependencyStructure DependencyStructure() const override; 29 30 std::vector<LayerFrameConfig> NextFrameConfig(bool restart) override; 31 absl::optional<GenericFrameInfo> OnEncodeDone( 32 LayerFrameConfig config) override; 33 34 private: 35 enum FramePattern { 36 kKeyFrame, 37 kDeltaFrameT2A, 38 kDeltaFrameT1, 39 kDeltaFrameT2B, 40 kDeltaFrameT0, 41 }; 42 LayerFrameConfig KeyFrameConfig() const; 43 44 FramePattern next_pattern_ = kKeyFrame; 45 }; 46 47 } // namespace webrtc 48 49 #endif // MODULES_VIDEO_CODING_CODECS_AV1_SCALABILITY_STRUCTURE_L3T3_H_ 50