generic_frame_info.h

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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 COMMON_VIDEO_GENERIC_FRAME_DESCRIPTOR_GENERIC_FRAME_INFO_H_

#define COMMON_VIDEO_GENERIC_FRAME_DESCRIPTOR_GENERIC_FRAME_INFO_H_

#include <bitset>

#include <initializer_list>

#include <vector>

#include "absl/container/inlined_vector.h"

#include "absl/strings/string_view.h"

#include "api/transport/rtp/dependency_descriptor.h"

#include "api/video/video_codec_constants.h"

#include "rtc_base/system/rtc_export.h"

namespace webrtc {

// Describes how a certain encoder buffer was used when encoding a frame.

struct CodecBufferUsage {

  constexpr CodecBufferUsage(int id, bool referenced, bool updated)

      : id(id), referenced(referenced), updated(updated) {}

  int id = 0;

  bool referenced = false;

  bool updated = false;

};

struct RTC_EXPORT GenericFrameInfo : public FrameDependencyTemplate {

  class Builder;

  GenericFrameInfo();

  GenericFrameInfo(const GenericFrameInfo&);

  ~GenericFrameInfo();

  absl::InlinedVector<CodecBufferUsage, kMaxEncoderBuffers> encoder_buffers;

  std::vector<bool> part_of_chain;

  std::bitset<32> active_decode_targets = ~uint32_t{0};

};

class GenericFrameInfo::Builder {

 public:

  Builder();

  ~Builder();

  GenericFrameInfo Build() const;

  Builder& T(int temporal_id);

  Builder& S(int spatial_id);

  Builder& Dtis(absl::string_view indication_symbols);

 private:

  GenericFrameInfo info_;

};

}  // namespace webrtc

#endif  // COMMON_VIDEO_GENERIC_FRAME_DESCRIPTOR_GENERIC_FRAME_INFO_H_