| /* |
| * 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 "mp_msg.h" |
| |
| #include "img_format.h" |
| #include "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) |
| { |
| if (vf->priv->aspect < 0.001) { // did the user input aspect or w,h params |
| if (vf->priv->w == 0) vf->priv->w = d_width; |
| if (vf->priv->h == 0) vf->priv->h = d_height; |
| if (vf->priv->w == -1) vf->priv->w = width; |
| if (vf->priv->h == -1) vf->priv->h = height; |
| if (vf->priv->w == -2) vf->priv->w = vf->priv->h * (double)d_width / d_height; |
| if (vf->priv->w == -3) vf->priv->w = vf->priv->h * (double)width / height; |
| if (vf->priv->h == -2) vf->priv->h = vf->priv->w * (double)d_height / d_width; |
| if (vf->priv->h == -3) vf->priv->h = vf->priv->w * (double)height / width; |
| if (vf->priv->method > -1) { |
| double aspect = (vf->priv->method & 2) ? ((double)height / width) : ((double)d_height / d_width); |
| if ((vf->priv->h > vf->priv->w * aspect) ^ (vf->priv->method & 1)) { |
| vf->priv->h = vf->priv->w * aspect; |
| } else { |
| vf->priv->w = vf->priv->h / aspect; |
| } |
| } |
| if (vf->priv->round > 1) { // round up |
| vf->priv->w += (vf->priv->round - 1 - (vf->priv->w - 1) % vf->priv->round); |
| vf->priv->h += (vf->priv->round - 1 - (vf->priv->h - 1) % vf->priv->round); |
| } |
| d_width = vf->priv->w; |
| d_height = vf->priv->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->draw_slice = vf_next_draw_slice; |
| vf->uninit = uninit; |
| //vf->default_caps = 0; |
| 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 |
| }; |