local_data_track.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 "livekit/data_track_error.h"
#include "livekit/data_track_frame.h"
#include "livekit/data_track_info.h"
#include "livekit/ffi_handle.h"
#include "livekit/result.h"
 
#include <cstddef>
#include <memory>
#include <optional>
#include <string>
#include <vector>
 
namespace livekit {
 
namespace proto {
class OwnedLocalDataTrack;
}
 
class LocalDataTrack {
public:
  ~LocalDataTrack() = default;
 
  LocalDataTrack(const LocalDataTrack &) = delete;
  LocalDataTrack &operator=(const LocalDataTrack &) = delete;
 
  const DataTrackInfo &info() const noexcept { return info_; }
 
  Result<void, LocalDataTrackTryPushError> tryPush(const DataTrackFrame &frame);
 
  Result<void, LocalDataTrackTryPushError>
  tryPush(std::vector<std::uint8_t> &&payload,
          std::optional<std::uint64_t> user_timestamp = std::nullopt);
 
  bool isPublished() const;
 
  void unpublishDataTrack();
 
private:
  friend class LocalParticipant;
 
  explicit LocalDataTrack(const proto::OwnedLocalDataTrack &owned);
 
  uintptr_t ffi_handle_id() const noexcept { return handle_.get(); }
 
  FfiHandle handle_;
 
  DataTrackInfo info_;
};
 
} // namespace livekit