89 строки
2.5 KiB
C
89 строки
2.5 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#ifndef AOM_DSP_SSIM_H_
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#define AOM_DSP_SSIM_H_
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#define MAX_SSIM_DB 100.0;
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "./aom_config.h"
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#include "aom_scale/yv12config.h"
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// metrics used for calculating ssim, ssim2, dssim, and ssimc
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typedef struct {
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// source sum ( over 8x8 region )
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uint32_t sum_s;
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// reference sum (over 8x8 region )
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uint32_t sum_r;
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// source sum squared ( over 8x8 region )
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uint32_t sum_sq_s;
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// reference sum squared (over 8x8 region )
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uint32_t sum_sq_r;
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// sum of source times reference (over 8x8 region)
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uint32_t sum_sxr;
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// calculated ssim score between source and reference
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double ssim;
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} Ssimv;
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// metrics collected on a frame basis
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typedef struct {
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// ssim consistency error metric ( see code for explanation )
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double ssimc;
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// standard ssim
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double ssim;
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// revised ssim ( see code for explanation)
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double ssim2;
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// ssim restated as an error metric like sse
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double dssim;
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// dssim converted to decibels
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double dssimd;
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// ssimc converted to decibels
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double ssimcd;
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} Metrics;
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double aom_get_ssim_metrics(uint8_t *img1, int img1_pitch, uint8_t *img2,
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int img2_pitch, int width, int height, Ssimv *sv2,
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Metrics *m, int do_inconsistency);
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double aom_calc_ssim(const YV12_BUFFER_CONFIG *source,
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const YV12_BUFFER_CONFIG *dest, double *weight);
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double aom_calc_fastssim(const YV12_BUFFER_CONFIG *source,
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const YV12_BUFFER_CONFIG *dest, double *ssim_y,
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double *ssim_u, double *ssim_v, uint32_t bd,
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uint32_t in_bd);
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#if CONFIG_AOM_HIGHBITDEPTH
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double aom_highbd_calc_ssim(const YV12_BUFFER_CONFIG *source,
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const YV12_BUFFER_CONFIG *dest, double *weight,
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uint32_t bd, uint32_t in_bd);
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#endif // CONFIG_AOM_HIGHBITDEPTH
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // AOM_DSP_SSIM_H_
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