typedef struct{
int id;
CDstatus status;
int numtracks;
int cur_track;
int cur_frame;
SDL_CDtrack track[SDL_MAX_TRACKS+1];
} SDL_CD;| id | Private drive identifier |
| status | Drive status |
| numtracks | Number of tracks on the CD |
| cur_track | Current track |
| cur_frame | Current frame offset within the track |
| track[SDL_MAX_TRACKS+1] | Array of track descriptions. (see SDL_CDtrack) |
An SDL_CD structure is returned by SDL_CDOpen. It represents an opened CDROM device and stores information on the layout of the tracks on the disc.
A frame is the base data unit of a CD. CD_FPS frames is equal to 1 second of music. SDL provides two macros for converting between time and frames: FRAMES_TO_MSF(f, M,S,F) and MSF_TO_FRAMES.