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/*
* 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.
*/
#ifndef VPX_DSP_SSIM_H_
#define VPX_DSP_SSIM_H_
#define MAX_SSIM_DB 100.0;
#ifdef __cplusplus
extern "C" {
#endif
#include "./vpx_config.h"
#include "vpx_scale/yv12config.h"
// metrics used for calculating ssim, ssim2, dssim, and ssimc
typedef struct {
// source sum ( over 8x8 region )
uint32_t sum_s;
// reference sum (over 8x8 region )
uint32_t sum_r;
// source sum squared ( over 8x8 region )
uint32_t sum_sq_s;
// reference sum squared (over 8x8 region )
uint32_t sum_sq_r;
// sum of source times reference (over 8x8 region)
uint32_t sum_sxr;
// 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;
double vpx_get_ssim_metrics(uint8_t *img1, int img1_pitch, uint8_t *img2,
int img2_pitch, int width, int height, Ssimv *sv2,
Metrics *m, int do_inconsistency);
double vpx_calc_ssim(const YV12_BUFFER_CONFIG *source,
const YV12_BUFFER_CONFIG *dest, double *weight);
double vpx_calc_fastssim(const YV12_BUFFER_CONFIG *source,
const YV12_BUFFER_CONFIG *dest, double *ssim_y,
double *ssim_u, double *ssim_v, uint32_t bd,
uint32_t in_bd);
#if CONFIG_VP9_HIGHBITDEPTH
double vpx_highbd_calc_ssim(const YV12_BUFFER_CONFIG *source,
const YV12_BUFFER_CONFIG *dest, double *weight,
uint32_t bd, uint32_t in_bd);
#endif // CONFIG_VP9_HIGHBITDEPTH
#ifdef __cplusplus
} // extern "C"
#endif
#endif // VPX_DSP_SSIM_H_
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