vf_ssim_init.c

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/*
 * 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
 */

#include "libavutil/x86/cpu.h"

#include "libavfilter/ssim.h"

void ff_ssim_4x4_line_ssse3(const uint8_t *buf, ptrdiff_t buf_stride,
                            const uint8_t *ref, ptrdiff_t ref_stride,
                            int (*sums)[4], int w);
void ff_ssim_4x4_line_xop  (const uint8_t *buf, ptrdiff_t buf_stride,
                            const uint8_t *ref, ptrdiff_t ref_stride,
                            int (*sums)[4], int w);
float ff_ssim_end_line_sse4(const int (*sum0)[4], const int (*sum1)[4], int w);

void ff_ssim_init_x86(SSIMDSPContext *dsp)
{
    int cpu_flags = av_get_cpu_flags();

    if (ARCH_X86_64 && EXTERNAL_SSSE3(cpu_flags))
        dsp->ssim_4x4_line = ff_ssim_4x4_line_ssse3;
    if (EXTERNAL_SSE4(cpu_flags))
        dsp->ssim_end_line = ff_ssim_end_line_sse4;
    if (EXTERNAL_XOP(cpu_flags))
        dsp->ssim_4x4_line = ff_ssim_4x4_line_xop;
}