chromium/third_party/webrtc/call/adaptation/video_source_restrictions.h

/*
 *  Copyright 2020 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 CALL_ADAPTATION_VIDEO_SOURCE_RESTRICTIONS_H_
#define CALL_ADAPTATION_VIDEO_SOURCE_RESTRICTIONS_H_

#include <string>
#include <utility>

#include "absl/types/optional.h"

namespace webrtc {

// Describes optional restrictions to the resolution and frame rate of a video
// source.
class VideoSourceRestrictions { … };

bool DidRestrictionsIncrease(VideoSourceRestrictions before,
                             VideoSourceRestrictions after);
bool DidRestrictionsDecrease(VideoSourceRestrictions before,
                             VideoSourceRestrictions after);
bool DidIncreaseResolution(VideoSourceRestrictions restrictions_before,
                           VideoSourceRestrictions restrictions_after);
bool DidDecreaseResolution(VideoSourceRestrictions restrictions_before,
                           VideoSourceRestrictions restrictions_after);
bool DidIncreaseFrameRate(VideoSourceRestrictions restrictions_before,
                          VideoSourceRestrictions restrictions_after);
bool DidDecreaseFrameRate(VideoSourceRestrictions restrictions_before,
                          VideoSourceRestrictions restrictions_after);

}  // namespace webrtc

#endif  // CALL_ADAPTATION_VIDEO_SOURCE_RESTRICTIONS_H_