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#include <sys/cdio.h>
#include <sys/cdrio.h>
//=================== VideoCD ==========================
#define CDROM_LEADOUT 0xAA
typedef struct {
uint8_t sync [12];
uint8_t header [4];
uint8_t subheader [8];
uint8_t data [2324];
uint8_t spare [4];
} cdsector_t;
typedef struct mp_vcd_priv_st {
int fd;
struct ioc_read_toc_single_entry entry;
cdsector_t buf;
} mp_vcd_priv_t;
static inline void vcd_set_msf(mp_vcd_priv_t* vcd, unsigned int sect){
vcd->entry.entry.addr.msf.frame=sect%75;
sect=sect/75;
vcd->entry.entry.addr.msf.second=sect%60;
sect=sect/60;
vcd->entry.entry.addr.msf.minute=sect;
}
static inline unsigned int vcd_get_msf(mp_vcd_priv_t* vcd){
return vcd->entry.entry.addr.msf.frame +
(vcd->entry.entry.addr.msf.second+
vcd->entry.entry.addr.msf.minute*60)*75;
}
int vcd_seek_to_track(mp_vcd_priv_t* vcd, int track){
vcd->entry.address_format = CD_MSF_FORMAT;
vcd->entry.track = track;
if (ioctl(vcd->fd, CDIOREADTOCENTRY, &vcd->entry)) {
mp_msg(MSGT_STREAM,MSGL_ERR,"ioctl dif1: %s\n",strerror(errno));
return -1;
}
return VCD_SECTOR_DATA*vcd_get_msf(vcd);
}
int vcd_get_track_end(mp_vcd_priv_t* vcd, int track){
struct ioc_toc_header tochdr;
if (ioctl(vcd->fd,CDIOREADTOCHEADER,&tochdr)==-1) {
mp_msg(MSGT_STREAM,MSGL_ERR,"read CDROM toc header: %s\n",strerror(errno));
return -1;
}
vcd->entry.address_format = CD_MSF_FORMAT;
vcd->entry.track = track<tochdr.ending_track?(track+1):CDROM_LEADOUT;
if (ioctl(vcd->fd, CDIOREADTOCENTRY, &vcd->entry)) {
mp_msg(MSGT_STREAM,MSGL_ERR,"ioctl dif2: %s\n",strerror(errno));
return -1;
}
return VCD_SECTOR_DATA*vcd_get_msf(vcd);
}
mp_vcd_priv_t* vcd_read_toc(int fd){
struct ioc_toc_header tochdr;
mp_vcd_priv_t* vcd;
int i;
if (ioctl(fd,CDIOREADTOCHEADER,&tochdr)==-1) {
mp_msg(MSGT_OPEN,MSGL_ERR,"read CDROM toc header: %s\n",strerror(errno));
return NULL;
}
for (i=tochdr.starting_track ; i<=tochdr.ending_track ; i++){
struct ioc_read_toc_single_entry tocentry;
tocentry.track = i;
tocentry.address_format = CD_MSF_FORMAT;
if (ioctl(fd,CDIOREADTOCENTRY,&tocentry)==-1) {
mp_msg(MSGT_OPEN,MSGL_ERR,"read CDROM toc entry: %s\n",strerror(errno));
return NULL;
}
mp_msg(MSGT_OPEN,MSGL_INFO,"track %02d: adr=%d ctrl=%d format=%d %02d:%02d:%02d\n",
(int)tocentry.track,
(int)tocentry.entry.addr_type,
(int)tocentry.entry.control,
(int)tocentry.address_format,
(int)tocentry.entry.addr.msf.minute,
(int)tocentry.entry.addr.msf.second,
(int)tocentry.entry.addr.msf.frame
);
}
vcd = malloc(sizeof(mp_vcd_priv_t));
vcd->fd = fd;
return vcd;
}
static int vcd_read(mp_vcd_priv_t* vcd,char *mem){
if (pread(vcd->fd,&vcd->buf,VCD_SECTOR_SIZE,vcd_get_msf(vcd)*VCD_SECTOR_SIZE)
!= VCD_SECTOR_SIZE) return 0; // EOF?
vcd->entry.entry.addr.msf.frame++;
if (vcd->entry.entry.addr.msf.frame==75){
vcd->entry.entry.addr.msf.frame=0;
vcd->entry.entry.addr.msf.second++;
if (vcd->entry.entry.addr.msf.second==60){
vcd->entry.entry.addr.msf.second=0;
vcd->entry.entry.addr.msf.minute++;
}
}
memcpy(mem,vcd->buf.data,VCD_SECTOR_DATA);
return VCD_SECTOR_DATA;
}
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