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 "common_video/generic_frame_descriptor/generic_frame_info.h" 22 23 namespace webrtc { 24 25 // This class is thread compatible. 26 class FrameDependenciesCalculator { 27 public: 28 FrameDependenciesCalculator() = default; 29 FrameDependenciesCalculator(const FrameDependenciesCalculator&) = default; 30 FrameDependenciesCalculator& operator=(const FrameDependenciesCalculator&) = 31 default; 32 33 // Calculates frame dependencies based on previous encoder buffer usage. 34 absl::InlinedVector<int64_t, 5> FromBuffersUsage( 35 int64_t frame_id, 36 rtc::ArrayView<const CodecBufferUsage> buffers_usage); 37 38 private: 39 struct BufferUsage { 40 absl::optional<int64_t> frame_id; 41 absl::InlinedVector<int64_t, 4> dependencies; 42 }; 43 44 absl::InlinedVector<BufferUsage, 4> buffers_; 45 }; 46 47 } // namespace webrtc 48 49 #endif // MODULES_VIDEO_CODING_FRAME_DEPENDENCIES_CALCULATOR_H_ 50