Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_CDStatus.3 @ 2661:d38309be5178 gsoc2008_audio_resampling
The windowed sinc filter generation code seems to be working fine. The FIR filtering code is also now working reasonably well. Occasionally the FIR filter will pop, but setting the normalization factor lower seems to help this. I suspect the problem is in the fixed point multiply/add. I also have a hunch the zero stuffing/sample discarding code is not correct, and I'll look at that soon to get it sorted out.
| author | Aaron Wishnick <schnarf@gmail.com> |
|---|---|
| date | Wed, 02 Jul 2008 08:04:50 +0000 |
| parents | 546f7c1eb755 |
| children | 1238da4a7112 |
| rev | line source |
|---|---|
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
1 .TH "SDL_CDStatus" "3" "Tue 11 Sep 2001, 22:58" "SDL" "SDL API Reference" |
| 0 | 2 .SH "NAME" |
|
2283
546f7c1eb755
Merged revision 3472 from SDL 1.2, fixing bug #493
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
3 SDL_CDStatus \- Returns the current status of the given drive\&. |
| 0 | 4 .SH "SYNOPSIS" |
| 5 .PP | |
| 6 \fB#include "SDL\&.h" | |
| 7 .sp | |
| 8 \fBCDstatus \fBSDL_CDStatus\fP\fR(\fBSDL_CD *cdrom\fR); | |
| 9 \fB/* Given a status, returns true if there\&'s a disk in the drive */ | |
| 10 #define CD_INDRIVE(status) ((int)status > 0) | |
| 11 .SH "DESCRIPTION" | |
| 12 .PP | |
| 13 This function returns the current status of the given drive\&. Status is described like so: | |
| 14 .PP | |
| 15 .nf | |
| 16 \f(CWtypedef enum { | |
| 17 CD_TRAYEMPTY, | |
| 18 CD_STOPPED, | |
| 19 CD_PLAYING, | |
| 20 CD_PAUSED, | |
| 21 CD_ERROR = -1 | |
| 22 } CDstatus;\fR | |
| 23 .fi | |
| 24 .PP | |
| 25 .PP | |
| 26 If the drive has a CD in it, the table of contents of the CD and current play position of the CD will be stored in the SDL_CD structure\&. | |
| 27 .PP | |
| 28 The macro \fBCD_INDRIVE\fP is provided for convenience, and given a status returns true if there\&'s a disk in the drive\&. | |
| 29 .PP | |
| 30 .RS | |
| 31 \fBNote: | |
| 32 .PP | |
| 33 \fBSDL_CDStatus\fP also updates the \fI\fBSDL_CD\fR\fR structure passed to it\&. | |
| 34 .RE | |
| 35 .SH "EXAMPLE" | |
| 36 .PP | |
| 37 .nf | |
| 38 \f(CWint playTrack(int track) | |
| 39 { | |
| 40 int playing = 0; | |
| 41 | |
| 42 if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) { | |
| 43 /* clamp to the actual number of tracks on the CD */ | |
| 44 if (track >= cdrom->numtracks) { | |
| 45 track = cdrom->numtracks-1; | |
| 46 } | |
| 47 | |
| 48 if ( SDL_CDPlayTracks(cdrom, track, 0, 1, 0) == 0 ) { | |
| 49 playing = 1; | |
| 50 } | |
| 51 } | |
| 52 return playing; | |
| 53 }\fR | |
| 54 .fi | |
| 55 .PP | |
| 56 .SH "SEE ALSO" | |
| 57 .PP | |
| 58 \fI\fBSDL_CD\fP\fR | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
59 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:58 |