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/*
* This file is part of MPlayer.
*
* MPlayer 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.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include "config.h"
#include "core/mp_msg.h"
#include "video/img_format.h"
#include "video/mp_image.h"
#include "vf.h"
struct vf_priv_s {
int w, h;
int method; // aspect method, 0 -> downscale, 1-> upscale. +2 -> original aspect.
int round;
float aspect;
};
static int config(struct vf_instance *vf,
int width, int height, int d_width, int d_height,
unsigned int flags, unsigned int outfmt)
{
int w = vf->priv->w;
int h = vf->priv->h;
if (vf->priv->aspect < 0.001) { // did the user input aspect or w,h params
if (w == 0) w = d_width;
if (h == 0) h = d_height;
if (w == -1) w = width;
if (h == -1) h = height;
if (w == -2) w = h * (double)d_width / d_height;
if (w == -3) w = h * (double)width / height;
if (h == -2) h = w * (double)d_height / d_width;
if (h == -3) h = w * (double)height / width;
if (vf->priv->method > -1) {
double aspect = (vf->priv->method & 2) ? ((double)height / width) : ((double)d_height / d_width);
if ((h > w * aspect) ^ (vf->priv->method & 1)) {
h = w * aspect;
} else {
w = h / aspect;
}
}
if (vf->priv->round > 1) { // round up
w += (vf->priv->round - 1 - (w - 1) % vf->priv->round);
h += (vf->priv->round - 1 - (h - 1) % vf->priv->round);
}
d_width = w;
d_height = h;
} else {
if (vf->priv->aspect * height > width) {
d_width = height * vf->priv->aspect + .5;
d_height = height;
} else {
d_height = width / vf->priv->aspect + .5;
d_width = width;
}
}
return vf_next_config(vf, width, height, d_width, d_height, flags, outfmt);
}
static void uninit(vf_instance_t *vf) {
free(vf->priv);
vf->priv = NULL;
}
static int vf_open(vf_instance_t *vf, char *args)
{
vf->config = config;
vf->uninit = uninit;
vf->priv = calloc(sizeof(struct vf_priv_s), 1);
vf->priv->aspect = 0.;
vf->priv->w = -1;
vf->priv->h = -1;
vf->priv->method = -1;
vf->priv->round = 1;
if (args) {
if (strchr(args, '/')) {
int w, h;
sscanf(args, "%d/%d", &w, &h);
vf->priv->aspect = (float)w/h;
} else if (strchr(args, '.')) {
sscanf(args, "%f", &vf->priv->aspect);
} else {
sscanf(args, "%d:%d:%d:%d", &vf->priv->w, &vf->priv->h, &vf->priv->method, &vf->priv->round);
}
}
if ((vf->priv->aspect < 0.) || (vf->priv->w < -3) || (vf->priv->h < -3) ||
((vf->priv->w < -1) && (vf->priv->h < -1)) ||
(vf->priv->method < -1) || (vf->priv->method > 3) ||
(vf->priv->round < 0)) {
mp_msg(MSGT_VFILTER, MSGL_ERR, "[dsize] Illegal value(s): aspect: %f w: %d h: %d aspect_method: %d round: %d\n", vf->priv->aspect, vf->priv->w, vf->priv->h, vf->priv->method, vf->priv->round);
free(vf->priv); vf->priv = NULL;
return -1;
}
return 1;
}
const vf_info_t vf_info_dsize = {
"reset displaysize/aspect",
"dsize",
"Rich Felker",
"",
vf_open,
NULL
};
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