From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 21:33:14 +0200
Subject: Adding upstream version 115.7.0esr.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../rtc_tools/frame_analyzer/video_color_aligner.h | 51 ++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 third_party/libwebrtc/rtc_tools/frame_analyzer/video_color_aligner.h

(limited to 'third_party/libwebrtc/rtc_tools/frame_analyzer/video_color_aligner.h')

diff --git a/third_party/libwebrtc/rtc_tools/frame_analyzer/video_color_aligner.h b/third_party/libwebrtc/rtc_tools/frame_analyzer/video_color_aligner.h
new file mode 100644
index 0000000000..b51e06060b
--- /dev/null
+++ b/third_party/libwebrtc/rtc_tools/frame_analyzer/video_color_aligner.h
@@ -0,0 +1,51 @@
+/*
+ *  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_COLOR_ALIGNER_H_
+#define RTC_TOOLS_FRAME_ANALYZER_VIDEO_COLOR_ALIGNER_H_
+
+#include <array>
+
+#include "api/scoped_refptr.h"
+#include "api/video/video_frame_buffer.h"
+#include "rtc_tools/video_file_reader.h"
+
+namespace webrtc {
+namespace test {
+
+// Represents a linear color transformation from [y, u, v] to [y', u', v']
+// through the equation: [y', u', v'] = [y, u, v, 1] * matrix.
+using ColorTransformationMatrix = std::array<std::array<float, 4>, 3>;
+
+// Calculate the optimal color transformation that should be applied to the test
+// video to match as closely as possible to the reference video.
+ColorTransformationMatrix CalculateColorTransformationMatrix(
+    const rtc::scoped_refptr<Video>& reference_video,
+    const rtc::scoped_refptr<Video>& test_video);
+
+// Calculate color transformation for a single I420 frame.
+ColorTransformationMatrix CalculateColorTransformationMatrix(
+    const rtc::scoped_refptr<I420BufferInterface>& reference_frame,
+    const rtc::scoped_refptr<I420BufferInterface>& test_frame);
+
+// Apply a color transformation to a video.
+rtc::scoped_refptr<Video> AdjustColors(
+    const ColorTransformationMatrix& color_matrix,
+    const rtc::scoped_refptr<Video>& video);
+
+// Apply a color transformation to a single I420 frame.
+rtc::scoped_refptr<I420BufferInterface> AdjustColors(
+    const ColorTransformationMatrix& color_matrix,
+    const rtc::scoped_refptr<I420BufferInterface>& frame);
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // RTC_TOOLS_FRAME_ANALYZER_VIDEO_COLOR_ALIGNER_H_
-- 
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