1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
/* Stuff for correct aspect scaling. */
#undef ASPECT_DEBUG
#ifdef ASPECT_DEBUG
#include <stdio.h>
#endif
float monitor_aspect=4.0/3.0;
/* aspect is called with the source resolution and the
* resolution, that the scaled image should fit into
*/
void aspect(int *srcw, int *srch, int fitinw, int fitinh){
int srcwcp, srchcp;
srcwcp=*srcw; srchcp=*srch;
srcwcp=fitinw;
#ifdef ASPECT_DEBUG
printf("aspect(0) fitin: %dx%d \n",fitinw,fitinh);
printf("aspect(1) wh: %dx%d (org: %dx%d)\n",srcwcp,srchcp,*srcw,*srch);
#endif
srchcp=(int)(((float)fitinw / (float)*srcw * (float)*srch)
* ((float)fitinh / ((float)fitinw / monitor_aspect)));
srchcp+=srchcp%2; // round
#ifdef ASPECT_DEBUG
printf("aspect(2) wh: %dx%d (org: %dx%d)\n",srcwcp,srchcp,*srcw,*srch);
#endif
if(srchcp>fitinh || srchcp<*srch){
srchcp=fitinh;
srcwcp=(int)(((float)fitinh / (float)*srch * (float)*srcw)
* ((float)fitinw / ((float)fitinh / (1/monitor_aspect))));
srcwcp+=srcwcp%2; // round
}
#ifdef ASPECT_DEBUG
printf("aspect(3) wh: %dx%d (org: %dx%d)\n",srcwcp,srchcp,*srcw,*srch);
#endif
*srcw=srcwcp; *srch=srchcp;
#ifdef ASPECT_DEBUG
printf("aspect(4) wh: %dx%d (org: %dx%d)\n",srcwcp,srchcp,*srcw,*srch);
#endif
}
|
