encoded_video_source.h

/*
 * Copyright 2026 LiveKit
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an “AS IS” BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#pragma once
 
#include <cstdint>
#include <optional>
#include <vector>
 
#include "livekit/video_codec.h"
#include "livekit/video_source.h"
#include "livekit/visibility.h"
 
namespace livekit {
 
class LIVEKIT_API EncodedVideoSource final : public VideoSource {
public:
  struct Frame {
    bool is_keyframe = false;
    std::uint32_t width = 0;
    std::uint32_t height = 0;
    std::int64_t timestamp_us = 0;
    std::vector<std::uint8_t> data;
    std::optional<VideoFrameMetadata> metadata;
  };
 
  struct RateControl {
    std::uint64_t target_bitrate_bps = 0;
    double framerate_fps = 0.0;
  };
 
  struct Feedback {
    bool keyframe_requested = false;
    std::optional<RateControl> rate_control;
  };
 
  EncodedVideoSource(VideoCodec codec, int width, int height);
 
  VideoCodec codec() const noexcept { return codec_; }
 
  [[nodiscard]] bool captureFrame(const Frame& frame) const;
 
  [[nodiscard]] Feedback takeFeedback() const;
 
private:
  using VideoSource::captureFrame;
 
  VideoCodec codec_;
};
 
} // namespace livekit