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/* Stuff for correct aspect scaling. */
#include "aspect.h"
#ifndef ASPECT_TEST
#include "../mp_msg.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;
#include "video_out.h"
float monitor_aspect=4.0/3.0;
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;
}
/* aspect is called with the source resolution and the
* resolution, that the scaled image should fit into
*/
void aspect(int *srcw, int *srch, int zoom){
int tmpw;
#ifdef ASPECT_DEBUG
printf("aspect(0) fitin: %dx%d zoom: %d screenaspect: %.2f\n",aspdat.scrw,aspdat.scrh,
zoom,monitor_aspect);
printf("aspect(1) wh: %dx%d (org: %dx%d)\n",*srcw,*srch,aspdat.prew,aspdat.preh);
#endif
if(zoom){
*srcw = aspdat.scrw;
*srch = (int)(((float)aspdat.scrw / (float)aspdat.prew * (float)aspdat.preh)
* ((float)aspdat.scrh / ((float)aspdat.scrw / monitor_aspect)));
}else{
*srcw = aspdat.prew;
*srch = (int)((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>aspdat.scrh || *srch<aspdat.orgh){
if(zoom)
tmpw = (int)(((float)aspdat.scrh / (float)aspdat.preh * (float)aspdat.prew)
* ((float)aspdat.scrw / ((float)aspdat.scrh / (1.0/monitor_aspect))));
else
tmpw = (int)((float)aspdat.prew
* ((float)aspdat.scrw / ((float)aspdat.scrh / (1.0/monitor_aspect))));
tmpw+= tmpw%2; // round
if(tmpw<=aspdat.scrw /*&& tmpw>=aspdat.orgw*/){
*srch = zoom?aspdat.scrh:aspdat.preh;
*srcw = tmpw;
}else{
#ifndef ASPECT_TEST
mp_msg(MSGT_VO,MSGL_WARN,"aspect: Warning: no suitable new res found!\n");
#else
printf("error: no new size found that fits into res!\n");
#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
}
void panscan_init( void )
{
vo_panscan_x=0;
vo_panscan_y=0;
vo_panscan_amount=0.0f;
}
void panscan_calc( void )
{
int fwidth,fheight;
int vo_panscan_area;
aspect(&fwidth,&fheight,A_ZOOM);
vo_panscan_area = (aspdat.scrh-fheight);
vo_panscan_amount = vo_fs ? vo_panscan : 0;
vo_panscan_x = vo_panscan_area * vo_panscan_amount * aspdat.asp;
vo_panscan_y = vo_panscan_area * vo_panscan_amount;
}
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