mirror of https://github.com/mpv-player/mpv
108 lines
3.3 KiB
C
108 lines
3.3 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpv 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include <limits.h>
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#include "config.h"
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#include "common/msg.h"
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#include "options/m_option.h"
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#include "video/img_format.h"
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#include "video/mp_image.h"
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#include "vf.h"
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struct vf_priv_s {
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int w, h;
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int method; // aspect method, 0 -> downscale, 1-> upscale. +2 -> original aspect.
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int round;
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float aspect;
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};
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static int config(struct vf_instance *vf,
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int width, int height, int d_width, int d_height,
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unsigned int flags, unsigned int outfmt)
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{
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int w = vf->priv->w;
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int h = vf->priv->h;
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if (vf->priv->aspect < 0.001) { // did the user input aspect or w,h params
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if (w == 0) w = d_width;
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if (h == 0) h = d_height;
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if (w == -1) w = width;
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if (h == -1) h = height;
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if (w == -2) w = h * (double)d_width / d_height;
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if (w == -3) w = h * (double)width / height;
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if (h == -2) h = w * (double)d_height / d_width;
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if (h == -3) h = w * (double)height / width;
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if (vf->priv->method > -1) {
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double aspect = (vf->priv->method & 2) ? ((double)height / width) : ((double)d_height / d_width);
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if ((h > w * aspect) ^ (vf->priv->method & 1)) {
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h = w * aspect;
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} else {
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w = h / aspect;
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}
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}
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if (vf->priv->round > 1) { // round up
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w += (vf->priv->round - 1 - (w - 1) % vf->priv->round);
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h += (vf->priv->round - 1 - (h - 1) % vf->priv->round);
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}
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d_width = w;
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d_height = h;
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} else {
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if (vf->priv->aspect * height > width) {
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d_width = height * vf->priv->aspect + .5;
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d_height = height;
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} else {
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d_height = width / vf->priv->aspect + .5;
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d_width = width;
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}
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}
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return vf_next_config(vf, width, height, d_width, d_height, flags, outfmt);
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}
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static int vf_open(vf_instance_t *vf)
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{
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vf->config = config;
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return 1;
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}
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#define OPT_BASE_STRUCT struct vf_priv_s
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const vf_info_t vf_info_dsize = {
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.description = "reset displaysize/aspect",
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.name = "dsize",
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.open = vf_open,
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.priv_size = sizeof(struct vf_priv_s),
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.priv_defaults = &(const struct vf_priv_s){
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.aspect = 0.0,
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.w = -1,
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.h = -1,
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.method = -1,
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.round = 1,
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},
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.options = (const struct m_option[]){
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OPT_INTRANGE("w", w, 0, -3, INT_MAX),
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OPT_INTRANGE("h", h, 0, -3, INT_MAX),
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OPT_INTRANGE("method", method, 0, -1, 3),
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OPT_INTRANGE("round", round, 0, 0, 9999),
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OPT_FLOAT("aspect", aspect, CONF_RANGE, .min = 0, .max = 10),
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{0}
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},
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};
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