Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_CD.3 @ 821:30168104389f
Date: Sat, 14 Feb 2004 14:52:40 +0200
From: "Mike Gorchak"
Subject: Batch of the QNX6 fixes for the SDL
1. Updated readme.QNX
2. Fixed crashes during intensive window updating under fast machines (got over 200 rectangles for update).
3. Fixed double-buffered fullscreen modes, now it works as needed.
4. Fixed Photon detection algorithm.
5. Fixed HWSURFACE update function.
6. Added SDL_PHOTON_FULLSCREEN_REFRESH environment variable support for control refresh rates under Photon.
7. Added 640x400 fullscreen mode emulation via 640x480 (if videodriver not supports original 640x400 mode of course) shifted by 40 vertical pixels from begin, to center it. It's needed for some old DOS games which ran in doubled 320x200 mode.
8. Added available video ram amount support.
8. Added hardware surface allocation/deallocation support if current videomode and videodriver supports it.
9. Added hardware filling support.
10. Added hardware blits support (simple and colorkeyed).
And I've added to testvidinfo test color-keyed blits benchmark (maybe need to add alpha blits benchmark too ?). Currently Photon not supporting any alpha hardware blittings (all drivers lack of alpha blitting code support, only software alpha blitting exist in photon, which is hundreds times slowest than the SDL's one). So I've not added the alpha support. I suppose new QNX 6.3 will have the hardware alpha support, so when it will be done, I'll add alpha support.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 14 Feb 2004 20:22:21 +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 |