ref: a340c64a79a5d443d21cfd9109bbbd80826469f7
dir: /vpx_dsp/psnr.h/
/*
* Copyright (c) 2016 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_PSNR_H_
#define VPX_DSP_PSNR_H_
#include "vpx_scale/yv12config.h"
#define MAX_PSNR 100.0
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
double psnr[4]; // total/y/u/v
uint64_t sse[4]; // total/y/u/v
uint32_t samples[4]; // total/y/u/v
} PSNR_STATS;
// TODO(dkovalev) change vpx_sse_to_psnr signature: double -> int64_t
/*!\brief Converts SSE to PSNR
*
* Converts sum of squared errros (SSE) to peak signal-to-noise ratio (PNSR).
*
* \param[in] samples Number of samples
* \param[in] peak Max sample value
* \param[in] sse Sum of squared errors
*/
double vpx_sse_to_psnr(double samples, double peak, double sse);
int64_t vpx_get_y_sse(const YV12_BUFFER_CONFIG *a, const YV12_BUFFER_CONFIG *b);
#if CONFIG_VP9_HIGHBITDEPTH
int64_t vpx_highbd_get_y_sse(const YV12_BUFFER_CONFIG *a,
const YV12_BUFFER_CONFIG *b);
void vpx_calc_highbd_psnr(const YV12_BUFFER_CONFIG *a,
const YV12_BUFFER_CONFIG *b, PSNR_STATS *psnr,
unsigned int bit_depth, unsigned int in_bit_depth);
#endif
void vpx_calc_psnr(const YV12_BUFFER_CONFIG *a, const YV12_BUFFER_CONFIG *b,
PSNR_STATS *psnr);
double vpx_psnrhvs(const YV12_BUFFER_CONFIG *source,
const YV12_BUFFER_CONFIG *dest, double *phvs_y,
double *phvs_u, double *phvs_v, uint32_t bd, uint32_t in_bd);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // VPX_DSP_PSNR_H_