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/*
* 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 RTC_TOOLS_FRAME_ANALYZER_VIDEO_GEOMETRY_ALIGNER_H_
#define RTC_TOOLS_FRAME_ANALYZER_VIDEO_GEOMETRY_ALIGNER_H_
#include "api/video/video_frame_buffer.h"
#include "rtc_tools/video_file_reader.h"
namespace webrtc {
namespace test {
struct CropRegion {
// Each value represents how much to crop from each side. Left is where x=0,
// and top is where y=0. All values equal to zero represents no cropping.
int left = 0;
int right = 0;
int top = 0;
int bottom = 0;
};
// Crops and zooms in on the cropped region so that the returned frame has the
// same resolution as the input frame.
rtc::scoped_refptr<I420BufferInterface> CropAndZoom(
const CropRegion& crop_region,
const rtc::scoped_refptr<I420BufferInterface>& frame);
// Calculate the optimal cropping region on the reference frame to maximize SSIM
// to the test frame.
CropRegion CalculateCropRegion(
const rtc::scoped_refptr<I420BufferInterface>& reference_frame,
const rtc::scoped_refptr<I420BufferInterface>& test_frame);
// Returns a cropped and zoomed version of the reference frame that matches up
// to the test frame. This is a simple helper function on top of
// CalculateCropRegion() and CropAndZoom().
rtc::scoped_refptr<I420BufferInterface> AdjustCropping(
const rtc::scoped_refptr<I420BufferInterface>& reference_frame,
const rtc::scoped_refptr<I420BufferInterface>& test_frame);
// Returns a cropped and zoomed version of the reference video that matches up
// to the test video. Frames are individually adjusted for cropping.
rtc::scoped_refptr<Video> AdjustCropping(
const rtc::scoped_refptr<Video>& reference_video,
const rtc::scoped_refptr<Video>& test_video);
} // namespace test
} // namespace webrtc
#endif // RTC_TOOLS_FRAME_ANALYZER_VIDEO_GEOMETRY_ALIGNER_H_
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