FFmpeg/libavfilter/vmaf_motion.h

/*
 * Copyright (c) 2017 Ronald S. Bultje <rsbultje@gmail.com>
 * Copyright (c) 2017 Ashish Pratap Singh <ashk43712@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_VMAF_MOTION_H
#define AVFILTER_VMAF_MOTION_H

#include <stddef.h>
#include <stdint.h>
#include "video.h"

typedef struct VMAFMotionDSPContext {
    uint64_t (*sad)(const uint16_t *img1, const uint16_t *img2, int w, int h,
                    ptrdiff_t img1_stride, ptrdiff_t img2_stride);
    void (*convolution_x)(const uint16_t *filter, int filt_w, const uint16_t *src,
                          uint16_t *dst, int w, int h, ptrdiff_t src_stride,
                          ptrdiff_t dst_stride);
    void (*convolution_y)(const uint16_t *filter, int filt_w, const uint8_t *src,
                          uint16_t *dst, int w, int h, ptrdiff_t src_stride,
                          ptrdiff_t dst_stride);
} VMAFMotionDSPContext;

void ff_vmafmotion_init_x86(VMAFMotionDSPContext *dsp);

typedef struct VMAFMotionData {
    uint16_t filter[5];
    int width;
    int height;
    ptrdiff_t stride;
    uint16_t *blur_data[2 /* cur, prev */];
    uint16_t *temp_data;
    double motion_sum;
    uint64_t nb_frames;
    VMAFMotionDSPContext vmafdsp;
} VMAFMotionData;

int ff_vmafmotion_init(VMAFMotionData *data, int w, int h, enum AVPixelFormat fmt);
double ff_vmafmotion_process(VMAFMotionData *data, AVFrame *frame);
double ff_vmafmotion_uninit(VMAFMotionData *data);

#endif /* AVFILTER_VMAF_MOTION_H */