SDL_CD
Name
SDL_CD -- CDROM Drive Information
Structure Definition
typedef struct{
int id;
CDstatus status;
int numtracks;
int cur_track;
int cur_frame;
SDL_CDtrack track[SDL_MAX_TRACKS+1];
} SDL_CD;
Structure Data
id |
Private drive identifier |
status |
Drive status (see SDL_CDStatus) |
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) |
Description
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.
Examples
int min, sec, frame;
int frame_offset;
FRAMES_TO_MSF(cdrom->cur_frame, &min, &sec, &frame);
printf("Current Position: %d minutes, %d seconds, %d frames\n", min, sec, frame);
frame_offset=MSF_TO_FRAMES(min, sec, frame);