/*
 *  Copyright (c) 2018 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 API_VIDEO_VIDEO_STREAM_ENCODER_SETTINGS_H_
#define API_VIDEO_VIDEO_STREAM_ENCODER_SETTINGS_H_

#include <optional>

#include "absl/functional/any_invocable.h"
#include "api/video/video_bitrate_allocator_factory.h"
#include "api/video_codecs/sdp_video_format.h"
#include "api/video_codecs/video_encoder.h"
#include "api/video_codecs/video_encoder_factory.h"

namespace webrtc {

// Requests switch to a specific encoder. If `format` is nullopt, a fallback
// to the next negotiated encoder is requested. If the requested encoder is
// not available and `allow_default_fallback` is `true`, the default fallback
// is invoked.
using EncoderSwitchRequestCallback =
    absl::AnyInvocable<void(std::optional<SdpVideoFormat> format,
                            bool allow_default_fallback)>;

struct VideoStreamEncoderSettings {
  explicit VideoStreamEncoderSettings(
      const VideoEncoder::Capabilities& capabilities)
      : capabilities(capabilities) {}

  // Enables the new method to estimate the cpu load from encoding, used for
  // cpu adaptation.
  bool experiment_cpu_load_estimator = false;

  // Ownership stays with WebrtcVideoEngine (delegated from PeerConnection).
  VideoEncoderFactory* encoder_factory = nullptr;

  // Ownership stays with WebrtcVideoEngine (delegated from PeerConnection).
  VideoBitrateAllocatorFactory* bitrate_allocator_factory = nullptr;

  // Negotiated capabilities which the VideoEncoder may expect the other
  // side to use.
  VideoEncoder::Capabilities capabilities;

  // Enables the frame instrumentation generator that is required for automatic
  // corruption detection.
  bool enable_frame_instrumentation_generator = false;
};

}  // namespace webrtc

#endif  // API_VIDEO_VIDEO_STREAM_ENCODER_SETTINGS_H_