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      1 /*
      2  *  Copyright 2013 The LibYuv Project Authors. All rights reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS. All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 // Get SSIM for video sequence. Assuming RAW 4:2:0 Y:Cb:Cr format
     12 
     13 #ifndef UTIL_SSIM_H_
     14 #define UTIL_SSIM_H_
     15 
     16 #include <math.h>  // For log10()
     17 
     18 #ifdef __cplusplus
     19 extern "C" {
     20 #endif
     21 
     22 #if !defined(INT_TYPES_DEFINED) && !defined(UINT8_TYPE_DEFINED)
     23 typedef unsigned char uint8;
     24 #define UINT8_TYPE_DEFINED
     25 #endif
     26 
     27 double CalcSSIM(const uint8* org,
     28                 const uint8* rec,
     29                 const int image_width,
     30                 const int image_height);
     31 
     32 double CalcLSSIM(double ssim);
     33 
     34 #ifdef __cplusplus
     35 }  // extern "C"
     36 #endif
     37 
     38 #endif  // UTIL_SSIM_H_
     39