mirror of
https://github.com/mpv-player/mpv
synced 2024-12-11 17:37:23 +00:00
860a224184
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@7407 b3059339-0415-0410-9bf9-f77b7e298cf2
99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
#include <sys/cdio.h>
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#include <sys/cdrio.h>
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//=================== VideoCD ==========================
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#define CDROM_LEADOUT 0xAA
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typedef struct {
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uint8_t sync [12];
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uint8_t header [4];
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uint8_t subheader [8];
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uint8_t data [2324];
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uint8_t spare [4];
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} cdsector_t;
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static cdsector_t vcd_buf;
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static struct ioc_read_toc_single_entry vcd_entry;
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static inline void vcd_set_msf(unsigned int sect){
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vcd_entry.entry.addr.msf.frame=sect%75;
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sect=sect/75;
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vcd_entry.entry.addr.msf.second=sect%60;
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sect=sect/60;
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vcd_entry.entry.addr.msf.minute=sect;
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}
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static inline unsigned int vcd_get_msf(){
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return vcd_entry.entry.addr.msf.frame +
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(vcd_entry.entry.addr.msf.second+
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vcd_entry.entry.addr.msf.minute*60)*75;
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}
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int vcd_seek_to_track(int fd,int track){
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vcd_entry.address_format = CD_MSF_FORMAT;
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vcd_entry.track = track;
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if (ioctl(fd, CDIOREADTOCENTRY, &vcd_entry)) {
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perror("ioctl dif1");
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return -1;
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}
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return VCD_SECTOR_DATA*vcd_get_msf();
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}
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int vcd_get_track_end(int fd,int track){
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struct ioc_toc_header tochdr;
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if (ioctl(fd,CDIOREADTOCHEADER,&tochdr)==-1)
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{ perror("read CDROM toc header: "); return -1; }
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vcd_entry.address_format = CD_MSF_FORMAT;
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vcd_entry.track = track<tochdr.ending_track?(track+1):CDROM_LEADOUT;
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if (ioctl(fd, CDIOREADTOCENTRY, &vcd_entry)) {
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perror("ioctl dif2");
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return -1;
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}
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return VCD_SECTOR_DATA*vcd_get_msf();
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}
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void vcd_read_toc(int fd){
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struct ioc_toc_header tochdr;
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int i;
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if (ioctl(fd,CDIOREADTOCHEADER,&tochdr)==-1)
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{ perror("read CDROM toc header: "); return; }
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for (i=tochdr.starting_track ; i<=tochdr.ending_track ; i++){
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struct ioc_read_toc_single_entry tocentry;
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tocentry.track = i;
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tocentry.address_format = CD_MSF_FORMAT;
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if (ioctl(fd,CDIOREADTOCENTRY,&tocentry)==-1)
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{ perror("read CDROM toc entry: "); return; }
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printf("track %02d: adr=%d ctrl=%d format=%d %02d:%02d:%02d\n",
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(int)tocentry.track,
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(int)tocentry.entry.addr_type,
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(int)tocentry.entry.control,
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(int)tocentry.address_format,
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(int)tocentry.entry.addr.msf.minute,
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(int)tocentry.entry.addr.msf.second,
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(int)tocentry.entry.addr.msf.frame
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);
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}
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}
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static int vcd_read(int fd,char *mem){
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if (pread(fd,&vcd_buf,VCD_SECTOR_SIZE,vcd_get_msf()*VCD_SECTOR_SIZE)
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!= VCD_SECTOR_SIZE) return 0; // EOF?
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vcd_entry.entry.addr.msf.frame++;
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if (vcd_entry.entry.addr.msf.frame==75){
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vcd_entry.entry.addr.msf.frame=0;
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vcd_entry.entry.addr.msf.second++;
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if (vcd_entry.entry.addr.msf.second==60){
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vcd_entry.entry.addr.msf.second=0;
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vcd_entry.entry.addr.msf.minute++;
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}
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}
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memcpy(mem,vcd_buf.data,VCD_SECTOR_DATA);
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return VCD_SECTOR_DATA;
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}
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