chromium/media/base/video_transformation.h

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef MEDIA_BASE_VIDEO_TRANSFORMATION_H_
#define MEDIA_BASE_VIDEO_TRANSFORMATION_H_

#include <string>

#include "media/base/media_export.h"

namespace media {

// Enumeration to represent 90 degree video rotation for MP4 videos
// where it can be rotated by 90 degree intervals.
enum VideoRotation : int { … };

// Stores frame rotation & mirroring values. These are usually calculated from
// a rotation matrix from a demuxer, and we only support 90 degree rotation
// increments.
struct MEDIA_EXPORT VideoTransformation { … };

MEDIA_EXPORT bool operator==(const struct VideoTransformation& first,
                             const struct VideoTransformation& second);

constexpr VideoTransformation kNoTransformation = …;

std::string MEDIA_EXPORT VideoRotationToString(VideoRotation rotation);

}  // namespace media

#endif  // MEDIA_BASE_VIDEO_TRANSFORMATION_H_