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[PATCH] SDL_GetVideoMode() does not find best mode, part 2 Following commit 1.51, I come accross a problem when SDL must choose between several video modes that could suit the one asked. If I ask 320x240 with this list: 768x480 768x240 640x400 640x200 384x480 384x240 320x400 320x200 The smallest selectables modes are 384x240 and 320x400. And SDL choose the later in this list, but 384x240 is more suitable. So I added a check to compare the pixel count (surface) of modes, and select the one which has the smallest pixel count. In my example, 384x240 has 92160 pixels, and 320x400 has 128000 pixels. So now SDL will choose 384x240 for the asked 320x240 mode.
author Patrice Mandin <patmandin@gmail.com>
date Thu, 19 Jan 2006 21:28:52 +0000
parents e5bc29de3f0a
children 546f7c1eb755
rev   line source
181
e5bc29de3f0a Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents: 55
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1 .TH "SDL_CDOpen" "3" "Tue 11 Sep 2001, 22:58" "SDL" "SDL API Reference"
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2 .SH "NAME"
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3 SDL_CDOpen\- Opens a CD-ROM drive for access\&.
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4 .SH "SYNOPSIS"
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5 .PP
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6 \fB#include "SDL\&.h"
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7 .sp
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8 \fBSDL_CD *\fBSDL_CDOpen\fP\fR(\fBint drive\fR);
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9 .SH "DESCRIPTION"
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10 .PP
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11 Opens a CD-ROM drive for access\&. It returns a \fI\fBSDL_CD\fR\fR structure on success, or \fBNULL\fP if the drive was invalid or busy\&. This newly opened CD-ROM becomes the default CD used when other CD functions are passed a \fBNULL\fP CD-ROM handle\&.
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12 .PP
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13 Drives are numbered starting with 0\&. Drive 0 is the system default CD-ROM\&.
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14 .SH "EXAMPLES"
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15 .PP
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16 .nf
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17 \f(CWSDL_CD *cdrom;
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18 int cur_track;
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19 int min, sec, frame;
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20 SDL_Init(SDL_INIT_CDROM);
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21 atexit(SDL_Quit);
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22
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23 /* Check for CD drives */
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24 if(!SDL_CDNumDrives()){
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25 /* None found */
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26 fprintf(stderr, "No CDROM devices available
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27 ");
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28 exit(-1);
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29 }
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30
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31 /* Open the default drive */
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32 cdrom=SDL_CDOpen(0);
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33
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34 /* Did if open? Check if cdrom is NULL */
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35 if(!cdrom){
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36 fprintf(stderr, "Couldn\&'t open drive: %s
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37 ", SDL_GetError());
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38 exit(-1);
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39 }
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40
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41 /* Print Volume info */
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42 printf("Name: %s
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43 ", SDL_CDName(0));
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44 printf("Tracks: %d
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45 ", cdrom->numtracks);
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46 for(cur_track=0;cur_track < cdrom->numtracks; cur_track++){
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47 FRAMES_TO_MSF(cdrom->track[cur_track]\&.length, &min, &sec, &frame);
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48 printf(" Track %d: Length %d:%d
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49 ", cur_track, min, sec);
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50 }
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51
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52 SDL_CDClose(cdrom);\fR
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53 .fi
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54 .PP
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55 .SH "SEE ALSO"
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56 .PP
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57 \fI\fBSDL_CD\fR\fR, \fI\fBSDL_CDtrack\fR\fR, \fI\fBSDL_CDClose\fP\fR
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58 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:58