1 /* 2 * Copyright (c) 2019 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_VIDEO_RECEIVER2_H_ 12 #define MODULES_VIDEO_CODING_VIDEO_RECEIVER2_H_ 13 14 #include <memory> 15 #include <vector> 16 17 #include "api/field_trials_view.h" 18 #include "api/sequence_checker.h" 19 #include "api/video_codecs/video_decoder.h" 20 #include "modules/video_coding/decoder_database.h" 21 #include "modules/video_coding/encoded_frame.h" 22 #include "modules/video_coding/generic_decoder.h" 23 #include "modules/video_coding/timing/timing.h" 24 #include "rtc_base/system/no_unique_address.h" 25 #include "system_wrappers/include/clock.h" 26 27 namespace webrtc { 28 29 // This class is a copy of vcm::VideoReceiver, trimmed down to what's used by 30 // VideoReceive stream, with the aim to incrementally trim it down further and 31 // ultimately delete it. It's difficult to do this incrementally with the 32 // original VideoReceiver class, since it is used by the legacy 33 // VideoCodingModule api. 34 class VideoReceiver2 { 35 public: 36 VideoReceiver2(Clock* clock, 37 VCMTiming* timing, 38 const FieldTrialsView& field_trials); 39 ~VideoReceiver2(); 40 41 void RegisterReceiveCodec(uint8_t payload_type, 42 const VideoDecoder::Settings& decoder_settings); 43 void DeregisterReceiveCodec(uint8_t payload_type); 44 void DeregisterReceiveCodecs(); 45 46 void RegisterExternalDecoder(std::unique_ptr<VideoDecoder> decoder, 47 uint8_t payload_type); 48 49 bool IsExternalDecoderRegistered(uint8_t payload_type) const; 50 int32_t RegisterReceiveCallback(VCMReceiveCallback* receive_callback); 51 52 int32_t Decode(const VCMEncodedFrame* frame); 53 54 private: 55 RTC_NO_UNIQUE_ADDRESS SequenceChecker construction_sequence_checker_; 56 RTC_NO_UNIQUE_ADDRESS SequenceChecker decoder_sequence_checker_; 57 Clock* const clock_; 58 VCMDecodedFrameCallback decoded_frame_callback_; 59 // Callbacks are set before the decoder thread starts. 60 // Once the decoder thread has been started, usage of `_codecDataBase` moves 61 // over to the decoder thread. 62 VCMDecoderDatabase codec_database_; 63 }; 64 65 } // namespace webrtc 66 67 #endif // MODULES_VIDEO_CODING_VIDEO_RECEIVER2_H_ 68