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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 <libavutil/common.h>
/* Stuff for correct aspect scaling. */
#include "aspect.h"
#include "vo.h"
#include "mpvcore/mp_msg.h"
#include "mpvcore/options.h"
#include "vo.h"
void aspect_save_videores(struct vo *vo, int w, int h, int d_w, int d_h)
{
vo->aspdat.orgw = w;
vo->aspdat.orgh = h;
vo->aspdat.prew = d_w;
vo->aspdat.preh = d_h;
vo->aspdat.par = (double)d_w / d_h * h / w;
}
void aspect_save_screenres(struct vo *vo, int scrw, int scrh)
{
mp_msg(MSGT_VO, MSGL_DBG2, "aspect_save_screenres %dx%d\n", scrw, scrh);
struct mp_vo_opts *opts = vo->opts;
if (scrw <= 0 && scrh <= 0)
scrw = 1024;
if (scrh <= 0)
scrh = (scrw * 3 + 3) / 4;
if (scrw <= 0)
scrw = (scrh * 4 + 2) / 3;
if (opts->force_monitor_aspect)
vo->aspdat.monitor_par = opts->force_monitor_aspect * scrh / scrw;
else
vo->aspdat.monitor_par = 1.0 / opts->monitor_pixel_aspect;
}
void aspect_calc_monitor(struct vo *vo, int *w, int *h)
{
float pixelaspect = vo->aspdat.monitor_par;
if (pixelaspect < 1) {
*h /= pixelaspect;
} else {
*w *= pixelaspect;
}
}
static void aspect_calc(struct vo *vo, int *srcw, int *srch)
{
struct aspect_data *aspdat = &vo->aspdat;
float pixelaspect = aspdat->monitor_par;
int fitw = FFMAX(1, vo->dwidth);
int fith = FFMAX(1, vo->dheight);
mp_msg(MSGT_VO, MSGL_DBG2, "aspect(0) fitin: %dx%d monitor_par: %.2f\n",
fitw, fith, aspdat->monitor_par);
*srcw = fitw;
*srch = (float)fitw / aspdat->prew * aspdat->preh / pixelaspect;
mp_msg(MSGT_VO, MSGL_DBG2, "aspect(1) wh: %dx%d (org: %dx%d)\n",
*srcw, *srch, aspdat->prew, aspdat->preh);
if (*srch > fith || *srch < aspdat->orgh) {
int tmpw = (float)fith / aspdat->preh * aspdat->prew * pixelaspect;
if (tmpw <= fitw) {
*srch = fith;
*srcw = tmpw;
} else if (*srch > fith) {
mp_tmsg(MSGT_VO, MSGL_WARN,
"[ASPECT] Warning: No suitable new res found!\n");
}
}
mp_msg(MSGT_VO, MSGL_DBG2, "aspect(2) wh: %dx%d (org: %dx%d)\n",
*srcw, *srch, aspdat->prew, aspdat->preh);
}
void aspect_calc_panscan(struct vo *vo, int *out_w, int *out_h)
{
struct mp_vo_opts *opts = vo->opts;
int fwidth, fheight;
aspect_calc(vo, &fwidth, &fheight);
int vo_panscan_area;
if (opts->panscanrange > 0) {
vo_panscan_area = vo->dheight - fheight;
if (!vo_panscan_area)
vo_panscan_area = vo->dwidth - fwidth;
vo_panscan_area *= opts->panscanrange;
} else
vo_panscan_area = -opts->panscanrange * vo->dheight;
*out_w = fwidth + vo_panscan_area * opts->panscan * fwidth / fheight;
*out_h = fheight + vo_panscan_area * opts->panscan;
}
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