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FFmpeg/libavfilter/ssim.h
Paul B Mahol fcc0424c93 avfilter/vf_ssim: improve precision
Use doubles for accumulating floats.
2020-02-04 18:28:04 +01:00

37 lines
1.3 KiB
C

/*
* Copyright (c) 2015 Ronald S. Bultje <rsbultje@gmail.com>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVFILTER_SSIM_H
#define AVFILTER_SSIM_H
#include <stddef.h>
#include <stdint.h>
typedef struct SSIMDSPContext {
void (*ssim_4x4_line)(const uint8_t *buf, ptrdiff_t buf_stride,
const uint8_t *ref, ptrdiff_t ref_stride,
int (*sums)[4], int w);
double (*ssim_end_line)(const int (*sum0)[4], const int (*sum1)[4], int w);
} SSIMDSPContext;
void ff_ssim_init_x86(SSIMDSPContext *dsp);
#endif /* AVFILTER_SSIM_H */