mirror of https://git.ffmpeg.org/ffmpeg.git
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
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/*
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* Copyright (c) 2015 Ronald S. Bultje <rsbultje@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include <stddef.h>
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#include <stdint.h>
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#include "psnr.h"
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static uint64_t sse_line_8bit(const uint8_t *main_line, const uint8_t *ref_line, int outw)
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{
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int j;
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unsigned m2 = 0;
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for (j = 0; j < outw; j++) {
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unsigned error = main_line[j] - ref_line[j];
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m2 += error * error;
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}
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return m2;
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}
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static uint64_t sse_line_16bit(const uint8_t *_main_line, const uint8_t *_ref_line, int outw)
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{
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int j;
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uint64_t m2 = 0;
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const uint16_t *main_line = (const uint16_t *) _main_line;
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const uint16_t *ref_line = (const uint16_t *) _ref_line;
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for (j = 0; j < outw; j++) {
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unsigned error = main_line[j] - ref_line[j];
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m2 += error * error;
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}
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return m2;
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}
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void ff_psnr_init(PSNRDSPContext *dsp, int bpp)
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{
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dsp->sse_line = bpp > 8 ? sse_line_16bit : sse_line_8bit;
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#if ARCH_X86
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ff_psnr_init_x86(dsp, bpp);
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#endif
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}
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