ssim.h 2.93 KB
Newer Older
Dmitry Kovalev's avatar
Dmitry Kovalev committed
1 2 3 4 5 6 7 8 9 10
/*
 *  Copyright (c) 2014 The WebM 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.
 */

11 12
#ifndef VPX_DSP_SSIM_H_
#define VPX_DSP_SSIM_H_
Dmitry Kovalev's avatar
Dmitry Kovalev committed
13 14 15 16 17

#ifdef __cplusplus
extern "C" {
#endif

18
#include "./vpx_config.h"
Dmitry Kovalev's avatar
Dmitry Kovalev committed
19 20
#include "vpx_scale/yv12config.h"

21 22 23
// metrics used for calculating ssim, ssim2, dssim, and ssimc
typedef struct {
  // source sum ( over 8x8 region )
24
  uint32_t sum_s;
25 26

  // reference sum (over 8x8 region )
27
  uint32_t sum_r;
28 29

  // source sum squared ( over 8x8 region )
30
  uint32_t sum_sq_s;
31 32

  // reference sum squared (over 8x8 region )
33
  uint32_t sum_sq_r;
34 35

  // sum of source times reference (over 8x8 region)
36
  uint32_t sum_sxr;
37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62

  // calculated ssim score between source and reference
  double ssim;
} Ssimv;

// metrics collected on a frame basis
typedef struct {
  // ssim consistency error metric ( see code for explanation )
  double ssimc;

  // standard ssim
  double ssim;

  // revised ssim ( see code for explanation)
  double ssim2;

  // ssim restated as an error metric like sse
  double dssim;

  // dssim converted to decibels
  double dssimd;

  // ssimc converted to decibels
  double ssimcd;
} Metrics;

63
double vpx_get_ssim_metrics(uint8_t *img1, int img1_pitch, uint8_t *img2,
64 65 66
                      int img2_pitch, int width, int height, Ssimv *sv2,
                      Metrics *m, int do_inconsistency);

67 68
double vpx_calc_ssim(const YV12_BUFFER_CONFIG *source,
                     const YV12_BUFFER_CONFIG *dest,
69
                     double *weight);
Dmitry Kovalev's avatar
Dmitry Kovalev committed
70

71 72
double vpx_calc_ssimg(const YV12_BUFFER_CONFIG *source,
                      const YV12_BUFFER_CONFIG *dest,
Dmitry Kovalev's avatar
Dmitry Kovalev committed
73 74
                      double *ssim_y, double *ssim_u, double *ssim_v);

75 76
double vpx_calc_fastssim(const YV12_BUFFER_CONFIG *source,
                         const YV12_BUFFER_CONFIG *dest,
77 78
                         double *ssim_y, double *ssim_u, double *ssim_v);

79 80
double vpx_psnrhvs(const YV12_BUFFER_CONFIG *source,
                   const YV12_BUFFER_CONFIG *dest,
81 82
                   double *ssim_y, double *ssim_u, double *ssim_v);

83
#if CONFIG_VP9_HIGHBITDEPTH
84 85
double vpx_highbd_calc_ssim(const YV12_BUFFER_CONFIG *source,
                            const YV12_BUFFER_CONFIG *dest,
86
                            double *weight,
Deb Mukherjee's avatar
Deb Mukherjee committed
87
                            unsigned int bd);
88

89 90
double vpx_highbd_calc_ssimg(const YV12_BUFFER_CONFIG *source,
                             const YV12_BUFFER_CONFIG *dest,
91 92 93
                             double *ssim_y,
                             double *ssim_u,
                             double *ssim_v,
Deb Mukherjee's avatar
Deb Mukherjee committed
94
                             unsigned int bd);
95 96
#endif  // CONFIG_VP9_HIGHBITDEPTH

Dmitry Kovalev's avatar
Dmitry Kovalev committed
97 98 99 100
#ifdef __cplusplus
}  // extern "C"
#endif

101
#endif  // VPX_DSP_SSIM_H_