Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_CDPlayTracks.3 @ 1240:3b8a43c428bb
From Bug #36:
There are a couple of issues with the selection of Altivec alpha-blitting
routines in CalculateAlphaBlit() in src/video/SDL_Blit_A.c.
1) There's no check for the presence of Altivec when checking if the
Blit32to565PixelAlphaAltivec() routine can be selected.
2) Altivec cannot be used in video memory, and there's no check if the
destination surface is a hardware surface. (Alpha-blitting to a hardware
surface with GPU support is a bad idea, but somebody's bound to do it anyway.)
Patch to fix these attached.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Sun, 08 Jan 2006 21:18:15 +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_CDPlayTracks" "3" "Tue 11 Sep 2001, 22:58" "SDL" "SDL API Reference" |
| 0 | 2 .SH "NAME" |
| 3 SDL_CDPlayTracks\- Play the given CD track(s) | |
| 4 .SH "SYNOPSIS" | |
| 5 .PP | |
| 6 \fB#include "SDL\&.h" | |
| 7 .sp | |
| 8 \fBint \fBSDL_CDPlayTracks\fP\fR(\fBSDL_CD *cdrom, int start_track, int start_frame, int ntracks, int nframes)\fR); | |
| 9 .SH "DESCRIPTION" | |
| 10 .PP | |
| 11 \fBSDL_CDPlayTracks\fP plays the given CD starting at track \fBstart_track\fR, for \fBntracks\fR tracks\&. | |
| 12 .PP | |
| 13 \fBstart_frame\fR is the frame offset, from the beginning of the \fBstart_track\fR, at which to start\&. \fBnframes\fR is the frame offset, from the beginning of the last track (\fBstart_track\fR+\fBntracks\fR), at which to end playing\&. | |
| 14 .PP | |
| 15 \fBSDL_CDPlayTracks\fP should only be called after calling \fI\fBSDL_CDStatus\fP\fR to get track information about the CD\&. | |
| 16 .PP | |
| 17 .RS | |
| 18 \fBNote: | |
| 19 .PP | |
| 20 Data tracks are ignored\&. | |
| 21 .RE | |
| 22 .SH "RETURN VALUE" | |
| 23 .PP | |
| 24 Returns \fB0\fR, or \fB-1\fR if there was an error\&. | |
| 25 .SH "EXAMPLES" | |
| 26 .PP | |
| 27 .PP | |
| 28 .nf | |
| 29 \f(CW/* assuming cdrom is a previously opened device */ | |
| 30 /* Play the entire CD */ | |
| 31 if(CD_INDRIVE(SDL_CDStatus(cdrom))) | |
| 32 SDL_CDPlayTracks(cdrom, 0, 0, 0, 0); | |
| 33 | |
| 34 /* Play the first track */ | |
| 35 if(CD_INDRIVE(SDL_CDStatus(cdrom))) | |
| 36 SDL_CDPlayTracks(cdrom, 0, 0, 1, 0); | |
| 37 | |
| 38 /* Play first 15 seconds of the 2nd track */ | |
| 39 if(CD_INDRIVE(SDL_CDStatus(cdrom))) | |
| 40 SDL_CDPlayTracks(cdrom, 1, 0, 0, CD_FPS*15);\fR | |
| 41 .fi | |
| 42 .PP | |
| 43 | |
| 44 .SH "SEE ALSO" | |
| 45 .PP | |
| 46 \fI\fBSDL_CDPlay\fP\fR, \fI\fBSDL_CDStatus\fP\fR, \fI\fBSDL_CD\fP\fR | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
47 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:58 |