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-rw-r--r--media/libyuv/util/ssim.h36
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diff --git a/media/libyuv/util/ssim.h b/media/libyuv/util/ssim.h
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+/*
+ * Copyright 2013 The LibYuv 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.
+ */
+
+// Get SSIM for video sequence. Assuming RAW 4:2:0 Y:Cb:Cr format
+
+#ifndef UTIL_SSIM_H_ // NOLINT
+#define UTIL_SSIM_H_
+
+#include <math.h> // For log10()
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if !defined(INT_TYPES_DEFINED) && !defined(UINT8_TYPE_DEFINED)
+typedef unsigned char uint8;
+#define UINT8_TYPE_DEFINED
+#endif
+
+double CalcSSIM(const uint8* org, const uint8* rec,
+ const int image_width, const int image_height);
+
+double CalcLSSIM(double ssim);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // UTIL_SSIM_H_ // NOLINT