mirror of
https://github.com/mpv-player/mpv
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57b2503b00
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@8937 b3059339-0415-0410-9bf9-f77b7e298cf2
125 lines
3.2 KiB
C
125 lines
3.2 KiB
C
/* Stuff for correct aspect scaling. */
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#include "aspect.h"
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#ifndef ASPECT_TEST
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#include "../mp_msg.h"
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#endif
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//#define ASPECT_DEBUG
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#if defined(ASPECT_DEBUG) || defined(ASPECT_TEST)
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#include <stdio.h>
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#endif
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int vo_panscan_x = 0;
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int vo_panscan_y = 0;
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float vo_panscan_amount = 0;
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#include "video_out.h"
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float monitor_aspect=4.0/3.0;
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static struct {
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int orgw; // real width
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int orgh; // real height
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int prew; // prescaled width
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int preh; // prescaled height
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int scrw; // horizontal resolution
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int scrh; // vertical resolution
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float asp;
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} aspdat;
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void aspect_save_orig(int orgw, int orgh){
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#ifdef ASPECT_DEBUG
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printf("aspect_save_orig %dx%d \n",orgw,orgh);
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#endif
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aspdat.orgw = orgw;
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aspdat.orgh = orgh;
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}
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void aspect_save_prescale(int prew, int preh){
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#ifdef ASPECT_DEBUG
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printf("aspect_save_prescale %dx%d \n",prew,preh);
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#endif
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aspdat.prew = prew;
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aspdat.preh = preh;
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}
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void aspect_save_screenres(int scrw, int scrh){
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#ifdef ASPECT_DEBUG
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printf("aspect_save_screenres %dx%d \n",scrw,scrh);
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#endif
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aspdat.scrw = scrw;
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aspdat.scrh = scrh;
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}
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/* aspect is called with the source resolution and the
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* resolution, that the scaled image should fit into
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*/
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void aspect(int *srcw, int *srch, int zoom){
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int tmpw;
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#ifdef ASPECT_DEBUG
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printf("aspect(0) fitin: %dx%d zoom: %d screenaspect: %.2f\n",aspdat.scrw,aspdat.scrh,
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zoom,monitor_aspect);
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printf("aspect(1) wh: %dx%d (org: %dx%d)\n",*srcw,*srch,aspdat.prew,aspdat.preh);
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#endif
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if(zoom){
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*srcw = aspdat.scrw;
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*srch = (int)(((float)aspdat.scrw / (float)aspdat.prew * (float)aspdat.preh)
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* ((float)aspdat.scrh / ((float)aspdat.scrw / monitor_aspect)));
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}else{
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*srcw = aspdat.prew;
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*srch = (int)((float)aspdat.preh
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* ((float)aspdat.scrh / ((float)aspdat.scrw / monitor_aspect)));
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}
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*srch+= *srch%2; // round
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#ifdef ASPECT_DEBUG
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printf("aspect(2) wh: %dx%d (org: %dx%d)\n",*srcw,*srch,aspdat.prew,aspdat.preh);
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#endif
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if(*srch>aspdat.scrh || *srch<aspdat.orgh){
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if(zoom)
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tmpw = (int)(((float)aspdat.scrh / (float)aspdat.preh * (float)aspdat.prew)
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* ((float)aspdat.scrw / ((float)aspdat.scrh / (1.0/monitor_aspect))));
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else
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tmpw = (int)((float)aspdat.prew
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* ((float)aspdat.scrw / ((float)aspdat.scrh / (1.0/monitor_aspect))));
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tmpw+= tmpw%2; // round
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if(tmpw<=aspdat.scrw /*&& tmpw>=aspdat.orgw*/){
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*srch = zoom?aspdat.scrh:aspdat.preh;
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*srcw = tmpw;
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}else{
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#ifndef ASPECT_TEST
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mp_msg(MSGT_VO,MSGL_WARN,"aspect: Warning: no suitable new res found!\n");
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#else
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printf("error: no new size found that fits into res!\n");
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#endif
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}
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}
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aspdat.asp=*srcw / (float)*srch;
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#ifdef ASPECT_DEBUG
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printf("aspect(3) wh: %dx%d (org: %dx%d)\n",*srcw,*srch,aspdat.prew,aspdat.preh);
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#endif
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}
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void panscan_init( void )
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{
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vo_panscan_x=0;
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vo_panscan_y=0;
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vo_panscan_amount=0.0f;
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}
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void panscan_calc( void )
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{
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int fwidth,fheight;
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int vo_panscan_area;
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aspect(&fwidth,&fheight,A_ZOOM);
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vo_panscan_area = (aspdat.scrh-fheight);
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vo_panscan_amount = vo_fs ? vo_panscan : 0;
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vo_panscan_x = vo_panscan_area * vo_panscan_amount * aspdat.asp;
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vo_panscan_y = vo_panscan_area * vo_panscan_amount;
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}
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