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 11 #ifndef MODULES_VIDEO_CODING_FRAME_DEPENDENCIES_CALCULATOR_H_ 12 #define MODULES_VIDEO_CODING_FRAME_DEPENDENCIES_CALCULATOR_H_ 13 14 #include <stdint.h> 15 16 #include <vector> 17 18 #include "absl/container/inlined_vector.h" 19 #include "absl/types/optional.h" 20 #include "api/array_view.h" 21 #include "api/video/video_frame_type.h" 22 #include "common_video/generic_frame_descriptor/generic_frame_info.h" 23 24 namespace webrtc { 25 26 // This class is thread compatible. 27 class FrameDependenciesCalculator { 28 public: 29 FrameDependenciesCalculator() = default; 30 FrameDependenciesCalculator(const FrameDependenciesCalculator&) = default; 31 FrameDependenciesCalculator& operator=(const FrameDependenciesCalculator&) = 32 default; 33 34 // Calculates frame dependencies based on previous encoder buffer usage. 35 absl::InlinedVector<int64_t, 5> FromBuffersUsage( 36 VideoFrameType frame_type, 37 int64_t frame_id, 38 rtc::ArrayView<const CodecBufferUsage> buffers_usage); 39 40 private: 41 struct BufferUsage { 42 absl::optional<int64_t> frame_id; 43 absl::InlinedVector<int64_t, 4> dependencies; 44 }; 45 46 absl::InlinedVector<BufferUsage, 4> buffers_; 47 }; 48 49 } // namespace webrtc 50 51 #endif // MODULES_VIDEO_CODING_FRAME_DEPENDENCIES_CALCULATOR_H_ 52