I've never programmed the CD before, so this was very enlightening. My
main question is: Why use the msf structs? The attached program is
simpler and seems to do exactly what you are looking for.
Torbjørn Kristoffersen wrote:
>
> Hello,
>
> I've attached a small CD-Player program which can't seem to work properly.
>
> When I compile and run it. I type:
>
> Start > 0
> End > 1
>
> This works. It should then start playing Track 1. However, it stops
> when it has played in about 1 minute.
>
> Now that's one problem, the other one occurs when I try to play other
> tracks. Typing '2' and '3' instead of '0' and '1' doesn't work at all.
> The program dumps a bunch of errors all over the screen and stops.
> (The error message contains this and more:
> "The failed "Play Audio MSF" packet command was:"
> "Error: Illegal request -- (Sense key=0x05)"
>
> Can someone look at my program and try to figure out what's wrong?
>
> Thanks in advance!
> Torbjørn S. Kristoffersen
>
>
>
> ------------------------------------------------------------------------
> Name: cd.c
> cd.c Type: Plain Text (TEXT/PLAIN)
> Encoding: BASE64
/* CD Player */
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/cdrom.h>
#include <stdio.h>
struct cdrom_ti ti;
int main(void)
{
int start=0, end=0;
int fd = open("/dev/cdrom", O_RDONLY | O_NONBLOCK);
if (fd < 0)
{
perror("open(\"/dev/cdrom\") failed");
return 1;
}
printf("Start at track > ");
scanf("%d", &start);
printf("End at track > ");
scanf("%d", &end);
ioctl(fd, CDROMSTOP);
ioctl(fd, CDROMSTART);
ti.cdti_trk0 = start;
ti.cdti_ind0 = 0;
ti.cdti_trk1 = end;
ti.cdti_ind1 = 0;
if ((ioctl(fd, CDROMPLAYTRKIND, &ti)) == -1)
return 1;
return 0;
}
