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#include "mcdp.h"
short cddb; /* if 0, we have no entries and no remote stuff */
static void cd_playmsf(struct mcdp *cd, struct cdrom_msf *msf);
static void cd_playmsf(struct mcdp *cd, struct cdrom_msf *msf) {
if (cd->status == CDROM_AUDIO_PLAY)
if (ioctl(cd->fd,CDROMPAUSE,NULL)<0)
return;
if (ioctl(cd->fd,CDROMPLAYMSF, msf)<0)
draw_status("error playing",1);
return;
}
/* GLOBAL */
/* open device or exit ! */
void cd_initdev(const char *cdpath, struct mcdp *cd) {
/* 1. check argv[1] */
if (cdpath) goto try;
/* 2. check $CDROM */
if ((cd->dev=getenv("CDROM"))!=NULL) goto try;
/* 3. try default */
{
struct stat st;
if (stat("/dev/.devfsd", &st)<0) {
cd->dev="/dev/cdrom"; /* really no devfs :( */
} else {
if (S_ISCHR(st.st_mode)
&& (major(st.st_rdev)==8)
&& (minor(st.st_rdev)==0)) {
cd->dev="/dev/cdroms/cdrom0";
/* yeah, we have devfs! */
} else cd->dev="/dev/cdrom";
}
}
try:
cd->fd=open(cd->dev, O_RDONLY|O_NONBLOCK);
if ((cd->fd<0) || (cd->status=ioctl(cd->fd,CDROM_DRIVE_STATUS,NULL)<0)) {
_printf("Sorry, can't open cd-device \"%s\" !\n", cd->dev);
exit(1);
}
if (cd->status==(100||105)) { /* audio/mixed */
mesg(1,"Sorry, your disc isn't a Mixed-CD or Audio-CD !\n");
exit(2);
}
return;
}
/* look at the specs, should do, what they want :) */
unsigned cd_discid(struct mcdp *cd) {
unsigned cd_cddbsum(register int n) {
register unsigned int ret=0;
while (n>0) {
ret += (n%10); n /= 10;
}
return ret;
}
int i=1, n=0;
while (i<=cd->title[1]) {
n+=cd_cddbsum(cd->t[i].cddb/75);i++;
}
return ((n%0xff)<<24|(cd->t[0].cddb - cd->t[1].cddb/75)<<8|cd->title[1]);
}
/* needs correct cd->fd; seems very efficient (no division...) */
int cd_readtracks(struct mcdp *cd) {
struct cdrom_tochdr cdth; /* TocHdr Stuff */
register int i;
if (ioctl(cd->fd, CDROMREADTOCHDR, &cdth)<0) {
draw_status("can't read disc",1);
return -1;
}
/* track[1] - [last-1])*/
for (i=1;i<=cdth.cdth_trk1 && i<=MCDP_CDAUDIO_MAX;i++) {
cd->cdte[i].cdte_track=i;
cd->cdte[i].cdte_format=CDROM_MSF;
if (ioctl(cd->fd, CDROMREADTOCENTRY, &cd->cdte[i])<0)
return -1;
else {
cd->t[i].audio=cd->cdte[i].cdte_ctrl & CDROM_DATA_TRACK;
cd->t[i].min=cd->cdte[i].cdte_addr.msf.minute;
cd->t[i].sec=cd->cdte[i].cdte_addr.msf.second;
cd->t[i].cddb = cd->cdte[i].cdte_addr.msf.minute*60*75 +
cd->cdte[i].cdte_addr.msf.second*75 +
cd->cdte[i].cdte_addr.msf.frame; /* cddb[track] */
cd->t[i-1].min=cd->t[i].min-cd->t[i-1].min;
if ((cd->cdte[i].cdte_addr.msf.frame)>37) cd->t[i-1].sec++; /* rounding a bit :) */
if ((cd->t[i-1].sec=cd->t[i].sec-cd->t[i-1].sec)<0) {
cd->t[i-1].min--;cd->t[i-1].sec+=60; /* adjust minutes */
}
}
}
/* now the leadout for track[0] + track[last] */
cd->cdte[0].cdte_track=CDROM_LEADOUT;
cd->cdte[0].cdte_format=CDROM_MSF;
if (ioctl(cd->fd, CDROMREADTOCENTRY, &cd->cdte[0])<0)
return -1;
else {
cd->t[0].audio=cd->cdte[0].cdte_ctrl & CDROM_DATA_TRACK;
cd->t[0].min=cd->cdte[0].cdte_addr.msf.minute;
cd->t[0].sec=cd->cdte[0].cdte_addr.msf.second;
cd->t[0].cddb =
cd->cdte[0].cdte_addr.msf.minute*60 +
cd->cdte[0].cdte_addr.msf.second; /* cddb[0] this last id */
cd->t[i-1].min=cd->t[0].min-cd->t[i-1].min;
cd->t[i-1].cddb = cd->cdte[i-1].cdte_addr.msf.minute*60*75 +
cd->cdte[i-1].cdte_addr.msf.second*75 +
cd->cdte[i-1].cdte_addr.msf.frame; /* cddb[last] */
if ((cd->cdte[i].cdte_addr.msf.frame)>37) cd->t[i-1].sec++; /* rounding a bit :) */
if ((cd->t[i-1].sec=cd->t[0].sec-cd->t[i-1].sec)<0) {
cd->t[i-1].min--;cd->t[i-1].sec+=60; /* adjust minutes */
}
}
updates[U_TRACKS]=1;
cd->title[1]=cdth.cdth_trk1; /* init all these stuff */
if ((cddb=wmdb_getentries(&cd[0]))) return cddb;
return cddb=cddb_getentries(&cd[0]); /* one of them */
}
int cd_readsubchannel(struct mcdp *cd) {
struct cdrom_volctrl cdv; /* Volume Stuff */
/* trackinfos */
cd->cds.cdsc_format = CDROM_MSF; /* reading MSF format */
if (ioctl(cd->fd,CDROMSUBCHNL,&cd->cds)<0) return -1;
/* audiostatus changed */
if (cd->cds.cdsc_audiostatus!=cd->status) { /* also NO_[DISC|INFO] */
cd->status=cd->cds.cdsc_audiostatus;
/* intro */
if (cd->method==M_INTRO && cd->status==CDROM_AUDIO_COMPLETED) {
cd->title[0]++; updates[U_TRACKS]=1;
cd_start(&cd[0]);
}
/* repeat cd */
if (cd->method==M_REPEAT_CD &&
cd->title[0]==cd->title[1] &&
cd->status==CDROM_AUDIO_COMPLETED) {
cd->title[0]=1; updates[U_TRACKS]=1;
cd_start(&cd[0]);
}
/* needed for the last track */
if (cd->method==M_REPEAT_TRK && cd->status==CDROM_AUDIO_COMPLETED) {
cd_start(&cd[0]);
}
updates[U_STATUS]=1; /* show status */
}
/* volume(0..3) changed */
if (ioctl(cd->fd,CDROMVOLREAD,&cdv)<0) return -1;
if (cdv.channel0!=cd->vol.channel0) {
cd->vol.channel0=cdv.channel0; updates[U_VOLUME]=1; }
if (cdv.channel1!=cd->vol.channel1) {
cd->vol.channel1=cdv.channel1; updates[U_VOLUME]=1; }
if (cdv.channel2!=cd->vol.channel2) {
cd->vol.channel2=cdv.channel2; updates[U_VOLUME]=1; }
if (cdv.channel3!=cd->vol.channel3) {
cd->vol.channel3=cdv.channel3; updates[U_VOLUME]=1; }
/* track changed */
if (cd->cds.cdsc_trk!=cd->title[0] && cd->method!=M_INTRO) { /* title[0]=current title[1]=max */
if (cd->method==M_REPEAT_TRK) {
cd_start(&cd[0]);
return cd->title[0];
}
cd->title[0]=cd->cds.cdsc_trk;
updates[U_TRACKS]=1;
}
return cd->cds.cdsc_trk; /* current title may be usefull :) */
}
/* set title[0] to new track before */
void cd_start(struct mcdp *cd) {
struct cdrom_msf msf;
/* checking for last/first */
if (cd->title[0]>cd->title[1]) cd->title[0]=1;
if (cd->title[0]<1) cd->title[0]=cd->title[1];
msf.cdmsf_min0 = cd->cdte[cd->title[0]].cdte_addr.msf.minute;
msf.cdmsf_sec0 = cd->cdte[cd->title[0]].cdte_addr.msf.second;
msf.cdmsf_frame0 = cd->cdte[cd->title[0]].cdte_addr.msf.frame;
if (cd->method==M_INTRO) {
msf.cdmsf_min1 = cd->cdte[cd->title[0]].cdte_addr.msf.minute;
msf.cdmsf_sec1 = cd->cdte[cd->title[0]].cdte_addr.msf.second+MCDP_INTRO_TIME;
if (msf.cdmsf_sec1>=60) { msf.cdmsf_min1++; msf.cdmsf_sec1-=60; }
msf.cdmsf_frame1 = cd->cdte[cd->title[0]].cdte_addr.msf.frame;
} else {
/* leadout */
msf.cdmsf_sec1 = cd->cdte[0].cdte_addr.msf.second;
msf.cdmsf_min1 = cd->cdte[0].cdte_addr.msf.minute;
msf.cdmsf_frame1 = cd->cdte[0].cdte_addr.msf.frame;
}
cd_playmsf(&cd[0], &msf);
return;
}
/* only for skipping, rest is done via cd_play(..)! */
void cd_skip(struct mcdp *cd, int secs) {
struct cdrom_msf msf;
if (cd->method==M_INTRO) return; /* skipping @intros ? */
if ((cd->title[0]==1) && (secs<0)) {
if (cd->cds.cdsc_absaddr.msf.minute*60+cd->cds.cdsc_absaddr.msf.second+secs<=2)
return; /* we ignore such things -- start */
}
secs += cd->cds.cdsc_absaddr.msf.minute * 60 + cd->cds.cdsc_absaddr.msf.second;
msf.cdmsf_min0 = secs / 60;
msf.cdmsf_sec0 = secs % 60;
msf.cdmsf_frame0 = 0;
msf.cdmsf_min1 = cd->cdte[0].cdte_addr.msf.minute;
msf.cdmsf_sec1 = cd->cdte[0].cdte_addr.msf.second;
msf.cdmsf_frame1 = cd->cdte[0].cdte_addr.msf.frame;
if (msf.cdmsf_min0*60*75+msf.cdmsf_sec0*75+msf.cdmsf_frame0
> msf.cdmsf_min1*60*75+msf.cdmsf_sec1*75+msf.cdmsf_frame1)
return; /* we ignore also this -- end */
cd_playmsf(&cd[0], &msf);
return;
}
void cd_stop(struct mcdp *cd) {
if (cd->cds.cdsc_audiostatus == CDROM_AUDIO_PLAY)
if (ioctl(cd->fd,CDROMSTOP,NULL)<0)
draw_status("error stopping",1);
return;
}
void cd_pauseresume(struct mcdp *cd) {
switch (cd->cds.cdsc_audiostatus) {
case CDROM_AUDIO_PLAY:
ioctl(cd->fd,CDROMPAUSE,NULL);
break;
case CDROM_AUDIO_PAUSED:
ioctl(cd->fd,CDROMRESUME,NULL);
break;
default: draw_status("request ignored",1);
}
return;
}
void cd_eject(int *fd) {
draw_status("opening cdrom",1);
ioctl(*fd,CDROMSTOP,NULL);
ioctl(*fd,CDROMEJECT,NULL);
return;
}
void cd_close(int *fd) {
draw_status("reading cdrom",1);
ioctl(*fd,CDROMCLOSETRAY,NULL);
updates[U_ALL]=1;
return;
}
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