video_receiver2.h - mozsearch

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/*

 *  Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.

 *  Use of this source code is governed by a BSD-style license

 *  that can be found in the LICENSE file in the root of the source

 *  tree. An additional intellectual property rights grant can be found

 *  in the file PATENTS.  All contributing project authors may

 *  be found in the AUTHORS file in the root of the source tree.

*/

#ifndef MODULES_VIDEO_CODING_VIDEO_RECEIVER2_H_

#define MODULES_VIDEO_CODING_VIDEO_RECEIVER2_H_

#include <memory>

#include <vector>

#include "api/field_trials_view.h"

#include "api/sequence_checker.h"

#include "api/video/encoded_frame.h"

#include "api/video_codecs/video_decoder.h"

#include "modules/video_coding/decoder_database.h"

#include "modules/video_coding/generic_decoder.h"

#include "modules/video_coding/timing/timing.h"

#include "rtc_base/system/no_unique_address.h"

#include "system_wrappers/include/clock.h"

namespace webrtc {

// This class is a copy of vcm::VideoReceiver, trimmed down to what's used by

// VideoReceive stream, with the aim to incrementally trim it down further and

// ultimately delete it. It's difficult to do this incrementally with the

// original VideoReceiver class, since it is used by the legacy

// VideoCodingModule api.

class VideoReceiver2 {

 public:

  VideoReceiver2(Clock* clock,

                 VCMTiming* timing,

                 const FieldTrialsView& field_trials);

  ~VideoReceiver2();

  void RegisterReceiveCodec(uint8_t payload_type,

                            const VideoDecoder::Settings& decoder_settings);

  void DeregisterReceiveCodec(uint8_t payload_type);

  void DeregisterReceiveCodecs();

  void RegisterExternalDecoder(std::unique_ptr<VideoDecoder> decoder,

                               uint8_t payload_type);

  bool IsExternalDecoderRegistered(uint8_t payload_type) const;

  int32_t RegisterReceiveCallback(VCMReceiveCallback* receive_callback);

  int32_t Decode(const EncodedFrame* frame);

 private:

  RTC_NO_UNIQUE_ADDRESS SequenceChecker construction_sequence_checker_;

  RTC_NO_UNIQUE_ADDRESS SequenceChecker decoder_sequence_checker_;

  Clock* const clock_;

  VCMDecodedFrameCallback decoded_frame_callback_;

  // Callbacks are set before the decoder thread starts.

  // Once the decoder thread has been started, usage of `_codecDataBase` moves

  // over to the decoder thread.

  VCMDecoderDatabase codec_database_;

};

}  // namespace webrtc

#endif  // MODULES_VIDEO_CODING_VIDEO_RECEIVER2_H_