mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 16:33:02 +00:00
105 lines
3.2 KiB
C
105 lines
3.2 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer 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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* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <libavutil/common.h>
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/* Stuff for correct aspect scaling. */
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#include "aspect.h"
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#include "vo.h"
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#include "mpvcore/mp_msg.h"
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#include "mpvcore/options.h"
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#include "vo.h"
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void aspect_save_videores(struct vo *vo, int w, int h, int d_w, int d_h)
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{
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vo->aspdat.orgw = w;
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vo->aspdat.orgh = h;
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vo->aspdat.prew = d_w;
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vo->aspdat.preh = d_h;
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vo->aspdat.par = (double)d_w / d_h * h / w;
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}
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void aspect_save_screenres(struct vo *vo, int scrw, int scrh)
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{
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MP_DBG(vo, "aspect_save_screenres %dx%d\n", scrw, scrh);
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struct mp_vo_opts *opts = vo->opts;
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if (scrw <= 0 && scrh <= 0)
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scrw = 1024;
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if (scrh <= 0)
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scrh = (scrw * 3 + 3) / 4;
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if (scrw <= 0)
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scrw = (scrh * 4 + 2) / 3;
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if (opts->force_monitor_aspect)
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vo->aspdat.monitor_par = opts->force_monitor_aspect * scrh / scrw;
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else
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vo->aspdat.monitor_par = 1.0 / opts->monitor_pixel_aspect;
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}
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void aspect_calc_monitor(struct vo *vo, int *w, int *h)
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{
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float pixelaspect = vo->aspdat.monitor_par;
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if (pixelaspect < 1) {
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*h /= pixelaspect;
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} else {
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*w *= pixelaspect;
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}
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}
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static void aspect_calc(struct vo *vo, int *srcw, int *srch)
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{
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struct aspect_data *aspdat = &vo->aspdat;
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float pixelaspect = aspdat->monitor_par;
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int fitw = FFMAX(1, vo->dwidth);
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int fith = FFMAX(1, vo->dheight);
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MP_DBG(vo, "aspect(0) fitin: %dx%d monitor_par: %.2f\n",
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fitw, fith, aspdat->monitor_par);
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*srcw = fitw;
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*srch = (float)fitw / aspdat->prew * aspdat->preh / pixelaspect;
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MP_DBG(vo, "aspect(1) wh: %dx%d (org: %dx%d)\n",
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*srcw, *srch, aspdat->prew, aspdat->preh);
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if (*srch > fith || *srch < aspdat->orgh) {
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int tmpw = (float)fith / aspdat->preh * aspdat->prew * pixelaspect;
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if (tmpw <= fitw) {
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*srch = fith;
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*srcw = tmpw;
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} else if (*srch > fith) {
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MP_WARN(vo, "No suitable new aspect found!\n");
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}
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}
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MP_DBG(vo, "aspect(2) wh: %dx%d (org: %dx%d)\n",
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*srcw, *srch, aspdat->prew, aspdat->preh);
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}
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void aspect_calc_panscan(struct vo *vo, int *out_w, int *out_h)
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{
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struct mp_vo_opts *opts = vo->opts;
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int fwidth, fheight;
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aspect_calc(vo, &fwidth, &fheight);
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int vo_panscan_area = vo->dheight - fheight;
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if (!vo_panscan_area)
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vo_panscan_area = vo->dwidth - fwidth;
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*out_w = fwidth + vo_panscan_area * opts->panscan * fwidth / fheight;
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*out_h = fheight + vo_panscan_area * opts->panscan;
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}
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