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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.
*/
/* Stuff for correct aspect scaling. */
#include "aspect.h"
#include "geometry.h"
//#ifndef ASPECT_TEST
#include "mp_msg.h"
#include "help_mp.h"
//#endif
//#define ASPECT_DEBUG
#if defined(ASPECT_DEBUG) || defined(ASPECT_TEST)
#include <stdio.h>
#endif
int vo_panscan_x = 0;
int vo_panscan_y = 0;
float vo_panscan_amount = 0;
float vo_panscanrange = 1.0;
#include "video_out.h"
float force_monitor_aspect=0;
float monitor_aspect=0;
float monitor_pixel_aspect=1;
static struct {
int orgw; // real width
int orgh; // real height
int prew; // prescaled width
int preh; // prescaled height
int scrw; // horizontal resolution
int scrh; // vertical resolution
float asp;
} aspdat;
void aspect_save_orig(int orgw, int orgh){
#ifdef ASPECT_DEBUG
printf("aspect_save_orig %dx%d \n",orgw,orgh);
#endif
aspdat.orgw = orgw;
aspdat.orgh = orgh;
}
void aspect_save_prescale(int prew, int preh){
#ifdef ASPECT_DEBUG
printf("aspect_save_prescale %dx%d \n",prew,preh);
#endif
aspdat.prew = prew;
aspdat.preh = preh;
}
void aspect_save_screenres(int scrw, int scrh){
#ifdef ASPECT_DEBUG
printf("aspect_save_screenres %dx%d \n",scrw,scrh);
#endif
aspdat.scrw = scrw;
aspdat.scrh = scrh;
if (force_monitor_aspect)
monitor_aspect = force_monitor_aspect;
else
monitor_aspect = monitor_pixel_aspect * scrw / scrh;
}
/* aspect is called with the source resolution and the
* resolution, that the scaled image should fit into
*/
void aspect_fit(int *srcw, int *srch, int fitw, int fith){
int tmpw;
#ifdef ASPECT_DEBUG
printf("aspect(0) fitin: %dx%d screenaspect: %.2f\n",aspdat.scrw,aspdat.scrh,
monitor_aspect);
printf("aspect(1) wh: %dx%d (org: %dx%d)\n",*srcw,*srch,aspdat.prew,aspdat.preh);
#endif
*srcw = fitw;
*srch = (int)(((float)fitw / (float)aspdat.prew * (float)aspdat.preh)
* ((float)aspdat.scrh / ((float)aspdat.scrw / monitor_aspect)));
*srch+= *srch%2; // round
#ifdef ASPECT_DEBUG
printf("aspect(2) wh: %dx%d (org: %dx%d)\n",*srcw,*srch,aspdat.prew,aspdat.preh);
#endif
if(*srch>fith || *srch<aspdat.orgh){
tmpw = (int)(((float)fith / (float)aspdat.preh * (float)aspdat.prew)
* ((float)aspdat.scrw / ((float)aspdat.scrh / (1.0/monitor_aspect))));
tmpw+= tmpw%2; // round
if(tmpw<=fitw /*&& tmpw>=aspdat.orgw*/){
*srch = fith;
*srcw = tmpw;
}else{
#ifndef ASPECT_TEST
mp_msg(MSGT_VO,MSGL_WARN,MSGTR_LIBVO_ASPECT_NoSuitableNewResFound);
#else
mp_msg(MSGT_VO,MSGL_WARN,MSGTR_LIBVO_ASPECT_NoNewSizeFoundThatFitsIntoRes);
#endif
}
}
aspdat.asp=*srcw / (float)*srch;
#ifdef ASPECT_DEBUG
printf("aspect(3) wh: %dx%d (org: %dx%d)\n",*srcw,*srch,aspdat.prew,aspdat.preh);
#endif
}
static void get_max_dims(int *w, int *h, int zoom)
{
*w = zoom ? aspdat.scrw : aspdat.prew;
*h = zoom ? aspdat.scrh : aspdat.preh;
if (zoom && WinID >= 0) zoom = A_WINZOOM;
if (zoom == A_WINZOOM) {
*w = vo_dwidth;
*h = vo_dheight;
}
}
void aspect(int *srcw, int *srch, int zoom){
int fitw;
int fith;
get_max_dims(&fitw, &fith, zoom);
if( !zoom && geometry_wh_changed ) {
#ifdef ASPECT_DEBUG
printf("aspect(0) no aspect forced!\n");
#endif
return; // the user doesn't want to fix aspect
}
aspect_fit(srcw, srch, fitw, fith);
}
void panscan_init( void )
{
vo_panscan_x=0;
vo_panscan_y=0;
vo_panscan_amount=0.0f;
}
static void panscan_calc_internal(int zoom)
{
int fwidth,fheight;
int vo_panscan_area;
int max_w, max_h;
get_max_dims(&max_w, &max_h, zoom);
if (vo_panscanrange > 0) {
aspect(&fwidth,&fheight,zoom);
vo_panscan_area = max_h - fheight;
if (!vo_panscan_area)
vo_panscan_area = max_w - fwidth;
vo_panscan_area *= vo_panscanrange;
} else
vo_panscan_area = -vo_panscanrange * max_h;
vo_panscan_amount = vo_fs || zoom == A_WINZOOM ? vo_panscan : 0;
vo_panscan_x = vo_panscan_area * vo_panscan_amount * aspdat.asp;
vo_panscan_y = vo_panscan_area * vo_panscan_amount;
}
void panscan_calc(void)
{
panscan_calc_internal(A_ZOOM);
}
/**
* vos that set vo_dwidth and v_dheight correctly should call this to update
* vo_panscan_x and vo_panscan_y
*/
void panscan_calc_windowed(void)
{
panscan_calc_internal(A_WINZOOM);
}
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