1*d9f75844SAndroid Build Coastguard Worker /* 2*d9f75844SAndroid Build Coastguard Worker * Copyright (c) 2019 The WebRTC project authors. All Rights Reserved. 3*d9f75844SAndroid Build Coastguard Worker * 4*d9f75844SAndroid Build Coastguard Worker * Use of this source code is governed by a BSD-style license 5*d9f75844SAndroid Build Coastguard Worker * that can be found in the LICENSE file in the root of the source 6*d9f75844SAndroid Build Coastguard Worker * tree. An additional intellectual property rights grant can be found 7*d9f75844SAndroid Build Coastguard Worker * in the file PATENTS. All contributing project authors may 8*d9f75844SAndroid Build Coastguard Worker * be found in the AUTHORS file in the root of the source tree. 9*d9f75844SAndroid Build Coastguard Worker */ 10*d9f75844SAndroid Build Coastguard Worker 11*d9f75844SAndroid Build Coastguard Worker #ifndef API_VIDEO_CODECS_BITSTREAM_PARSER_H_ 12*d9f75844SAndroid Build Coastguard Worker #define API_VIDEO_CODECS_BITSTREAM_PARSER_H_ 13*d9f75844SAndroid Build Coastguard Worker 14*d9f75844SAndroid Build Coastguard Worker #include <stddef.h> 15*d9f75844SAndroid Build Coastguard Worker #include <stdint.h> 16*d9f75844SAndroid Build Coastguard Worker 17*d9f75844SAndroid Build Coastguard Worker #include "absl/types/optional.h" 18*d9f75844SAndroid Build Coastguard Worker #include "api/array_view.h" 19*d9f75844SAndroid Build Coastguard Worker 20*d9f75844SAndroid Build Coastguard Worker namespace webrtc { 21*d9f75844SAndroid Build Coastguard Worker 22*d9f75844SAndroid Build Coastguard Worker // This class is an interface for bitstream parsers. 23*d9f75844SAndroid Build Coastguard Worker class BitstreamParser { 24*d9f75844SAndroid Build Coastguard Worker public: 25*d9f75844SAndroid Build Coastguard Worker virtual ~BitstreamParser() = default; 26*d9f75844SAndroid Build Coastguard Worker 27*d9f75844SAndroid Build Coastguard Worker // Parse an additional chunk of the bitstream. 28*d9f75844SAndroid Build Coastguard Worker virtual void ParseBitstream(rtc::ArrayView<const uint8_t> bitstream) = 0; 29*d9f75844SAndroid Build Coastguard Worker 30*d9f75844SAndroid Build Coastguard Worker // Get the last extracted QP value from the parsed bitstream. If no QP 31*d9f75844SAndroid Build Coastguard Worker // value could be parsed, returns absl::nullopt. 32*d9f75844SAndroid Build Coastguard Worker virtual absl::optional<int> GetLastSliceQp() const = 0; 33*d9f75844SAndroid Build Coastguard Worker }; 34*d9f75844SAndroid Build Coastguard Worker 35*d9f75844SAndroid Build Coastguard Worker } // namespace webrtc 36*d9f75844SAndroid Build Coastguard Worker 37*d9f75844SAndroid Build Coastguard Worker #endif // API_VIDEO_CODECS_BITSTREAM_PARSER_H_ 38