1 files changed, 57 insertions, 0 deletions
diff --git a/third_party/libwebrtc/rtc_tools/frame_analyzer/video_geometry_aligner.h b/third_party/libwebrtc/rtc_tools/frame_analyzer/video_geometry_aligner.h
new file mode 100644
index 0000000000..47667b0d13
--- /dev/null
+++ b/third_party/libwebrtc/rtc_tools/frame_analyzer/video_geometry_aligner.h
@@ -0,0 +1,57 @@
+/*
+ *  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_