Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_CD.3 @ 1257:448a9a64537b
[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
diff
changeset
|
1 .TH "SDL_CD" "3" "Tue 11 Sep 2001, 22:58" "SDL" "SDL API Reference" |
| 0 | 2 .SH "NAME" |
| 3 SDL_CD\- CDROM Drive Information | |
| 4 .SH "STRUCTURE DEFINITION" | |
| 5 .PP | |
| 6 .nf | |
| 7 \f(CWtypedef struct{ | |
| 8 int id; | |
| 9 CDstatus status; | |
| 10 int numtracks; | |
| 11 int cur_track; | |
| 12 int cur_frame; | |
| 13 SDL_CDtrack track[SDL_MAX_TRACKS+1]; | |
| 14 } SDL_CD;\fR | |
| 15 .fi | |
| 16 .PP | |
| 17 .SH "STRUCTURE DATA" | |
| 18 .TP 20 | |
| 19 \fBid\fR | |
| 20 Private drive identifier | |
| 21 .TP 20 | |
| 22 \fBstatus\fR | |
| 23 Drive \fIstatus\fR | |
| 24 .TP 20 | |
| 25 \fBnumtracks\fR | |
| 26 Number of tracks on the CD | |
| 27 .TP 20 | |
| 28 \fBcur_track\fR | |
| 29 Current track | |
| 30 .TP 20 | |
| 31 \fBcur_frame\fR | |
| 32 Current frame offset within the track | |
| 33 .TP 20 | |
| 34 \fBtrack\fR[SDL_MAX_TRACKS+1] | |
| 35 Array of track descriptions\&. (see \fI\fBSDL_CDtrack\fR\fR) | |
| 36 .SH "DESCRIPTION" | |
| 37 .PP | |
| 38 An \fBSDL_CD\fR structure is returned by \fI\fBSDL_CDOpen\fP\fR\&. It represents an opened CDROM device and stores information on the layout of the tracks on the disc\&. | |
| 39 .PP | |
| 40 A frame is the base data unit of a CD\&. \fBCD_FPS\fP frames is equal to 1 second of music\&. SDL provides two macros for converting between time and frames: \fBFRAMES_TO_MSF(f, M,S,F)\fP and \fBMSF_TO_FRAMES\fP\&. | |
| 41 .SH "EXAMPLES" | |
| 42 .PP | |
| 43 .nf | |
| 44 \f(CWint min, sec, frame; | |
| 45 int frame_offset; | |
| 46 | |
| 47 FRAMES_TO_MSF(cdrom->cur_frame, &min, &sec, &frame); | |
| 48 printf("Current Position: %d minutes, %d seconds, %d frames | |
| 49 ", min, sec, frame); | |
| 50 | |
| 51 frame_offset=MSF_TO_FRAMES(min, sec, frame);\fR | |
| 52 .fi | |
| 53 .PP | |
| 54 .SH "SEE ALSO" | |
| 55 .PP | |
| 56 \fI\fBSDL_CDOpen\fP\fR, \fI\fBSDL_CDtrack\fR\fR | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
57 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:58 |