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/*
* Copyright (C) 2009 Loren Merritt <lorenm@u.washignton.edu>
*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpv 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include <math.h>
#include "vf.h"
#include "common/common.h"
#include "options/m_option.h"
#include "vf_lavfi.h"
struct vf_priv_s {
float cfg_thresh;
int cfg_radius;
float cfg_size;
int radius;
struct vf_lw_opts *lw_opts;
} const vf_priv_dflt = {
.cfg_thresh = 1.5,
.cfg_radius = -1,
.cfg_size = -1,
};
static int lavfi_reconfig(struct vf_instance *vf,
struct mp_image_params *in,
struct mp_image_params *out)
{
struct vf_priv_s *p = vf_lw_old_priv(vf);
int w = in->w;
int h = in->h;
p->radius = p->cfg_radius;
if (p->cfg_size > -1)
p->radius = (p->cfg_size / 100.0f) * sqrtf(w * w + h * h);
p->radius = MPCLAMP((p->radius+1)&~1, 4, 32);
vf_lw_update_graph(vf, "gradfun", "%f:%d", p->cfg_thresh, p->radius);
return 0;
}
static int vf_open(vf_instance_t *vf)
{
bool have_radius = vf->priv->cfg_radius > -1;
bool have_size = vf->priv->cfg_size > -1;
if (have_radius && have_size) {
MP_ERR(vf, "scale: gradfun: only one of "
"radius/size parameters allowed at the same time!\n");
return 0;
}
if (!have_radius && !have_size)
vf->priv->cfg_size = 1.0;
if (vf_lw_set_graph(vf, vf->priv->lw_opts, "gradfun", "%f:4",
vf->priv->cfg_thresh) >= 0)
{
vf_lw_set_reconfig_cb(vf, lavfi_reconfig);
return 1;
}
MP_FATAL(vf, "This version of libavfilter has no 'gradfun' filter.\n");
return 0;
}
#define OPT_BASE_STRUCT struct vf_priv_s
static const m_option_t vf_opts_fields[] = {
OPT_FLOATRANGE("strength", cfg_thresh, 0, 0.51, 255),
OPT_INTRANGE("radius", cfg_radius, 0, 4, 32),
OPT_FLOATRANGE("size", cfg_size, 0, 0.1, 5.0),
OPT_SUBSTRUCT("", lw_opts, vf_lw_conf, 0),
{0}
};
const vf_info_t vf_info_gradfun = {
.description = "gradient deband",
.name = "gradfun",
.open = vf_open,
.priv_size = sizeof(struct vf_priv_s),
.priv_defaults = &vf_priv_dflt,
.options = vf_opts_fields,
};
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