88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
/*
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* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VPX_DSP_SSIM_H_
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#define VPX_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 "./vpx_config.h"
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#include "vpx_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 vpx_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 vpx_calc_ssim(const YV12_BUFFER_CONFIG *source,
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const YV12_BUFFER_CONFIG *dest, double *weight);
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double vpx_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_VP9_HIGHBITDEPTH
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double vpx_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_VP9_HIGHBITDEPTH
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VPX_DSP_SSIM_H_
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