mirror of
https://github.com/mpv-player/mpv
synced 2024-12-23 23:32:26 +00:00
37c39a9f74
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@23872 b3059339-0415-0410-9bf9-f77b7e298cf2
158 lines
4.3 KiB
C
158 lines
4.3 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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#define TOCADDR(te) ((te).entry.addr)
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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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typedef struct mp_vcd_priv_st {
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int fd;
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struct ioc_read_toc_single_entry entry;
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cdsector_t buf;
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} mp_vcd_priv_t;
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static inline void
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vcd_set_msf(mp_vcd_priv_t* vcd, unsigned int sect)
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{
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TOCADDR(vcd->entry).msf.frame = sect % 75;
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sect = sect / 75;
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TOCADDR(vcd->entry).msf.second = sect % 60;
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sect = sect / 60;
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TOCADDR(vcd->entry).msf.minute = sect;
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}
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static inline void
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vcd_inc_msf(mp_vcd_priv_t* vcd)
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{
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TOCADDR(vcd->entry).msf.frame++;
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if (TOCADDR(vcd->entry).msf.frame==75){
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TOCADDR(vcd->entry).msf.frame=0;
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TOCADDR(vcd->entry).msf.second++;
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if (TOCADDR(vcd->entry).msf.second==60){
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TOCADDR(vcd->entry).msf.second=0;
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TOCADDR(vcd->entry).msf.minute++;
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}
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}
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}
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static inline unsigned int
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vcd_get_msf(mp_vcd_priv_t* vcd)
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{
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return TOCADDR(vcd->entry).msf.frame +
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(TOCADDR(vcd->entry).msf.second +
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TOCADDR(vcd->entry).msf.minute * 60) * 75;
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}
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int
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vcd_seek_to_track(mp_vcd_priv_t* vcd, int track)
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{
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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(vcd->fd, CDIOREADTOCENTRY, &vcd->entry)) {
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mp_msg(MSGT_STREAM,MSGL_ERR,"ioctl dif1: %s\n",strerror(errno));
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return -1;
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}
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return VCD_SECTOR_DATA * vcd_get_msf(vcd);
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}
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int
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vcd_get_track_end(mp_vcd_priv_t* vcd, int track)
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{
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struct ioc_toc_header tochdr;
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if (ioctl(vcd->fd, CDIOREADTOCHEADER, &tochdr) == -1) {
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mp_msg(MSGT_STREAM,MSGL_ERR,"read CDROM toc header: %s\n",strerror(errno));
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return -1;
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}
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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(vcd->fd, CDIOREADTOCENTRY, &vcd->entry)) {
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mp_msg(MSGT_STREAM,MSGL_ERR,"ioctl dif2: %s\n",strerror(errno));
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return -1;
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}
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return VCD_SECTOR_DATA * vcd_get_msf(vcd);
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}
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mp_vcd_priv_t*
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vcd_read_toc(int fd)
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{
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struct ioc_toc_header tochdr;
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mp_vcd_priv_t* vcd;
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int i, min = 0, sec = 0, frame = 0;
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if (ioctl(fd, CDIOREADTOCHEADER, &tochdr) == -1) {
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mp_msg(MSGT_OPEN,MSGL_ERR,"read CDROM toc header: %s\n",strerror(errno));
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return NULL;
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}
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mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_START_TRACK=%d\n", tochdr.starting_track);
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mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_END_TRACK=%d\n", tochdr.ending_track);
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for (i = tochdr.starting_track; i <= tochdr.ending_track + 1; i++) {
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struct ioc_read_toc_single_entry tocentry;
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tocentry.track = i<=tochdr.ending_track ? i : CDROM_LEADOUT;
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tocentry.address_format = CD_MSF_FORMAT;
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if (ioctl(fd, CDIOREADTOCENTRY, &tocentry) == -1) {
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mp_msg(MSGT_OPEN,MSGL_ERR,"read CDROM toc entry: %s\n",strerror(errno));
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return NULL;
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}
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if (i <= tochdr.ending_track)
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mp_msg(MSGT_OPEN,MSGL_INFO,"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)TOCADDR(tocentry).msf.minute,
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(int)TOCADDR(tocentry).msf.second,
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(int)TOCADDR(tocentry).msf.frame
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);
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if (mp_msg_test(MSGT_IDENTIFY, MSGL_INFO))
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{
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if (i > tochdr.starting_track)
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{
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min = TOCADDR(tocentry).msf.minute - min;
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sec = TOCADDR(tocentry).msf.second - sec;
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frame = TOCADDR(tocentry).msf.frame - frame;
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if ( frame < 0 )
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{
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frame += 75;
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sec --;
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}
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if ( sec < 0 )
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{
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sec += 60;
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min --;
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}
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mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_TRACK_%d_MSF=%02d:%02d:%02d\n", i - 1, min, sec, frame);
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}
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min = TOCADDR(tocentry).msf.minute;
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sec = TOCADDR(tocentry).msf.second;
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frame = TOCADDR(tocentry).msf.frame;
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}
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}
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vcd = malloc(sizeof(mp_vcd_priv_t));
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vcd->fd = fd;
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return vcd;
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}
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static int
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vcd_read(mp_vcd_priv_t* vcd, char *mem)
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{
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if (pread(vcd->fd,&vcd->buf,VCD_SECTOR_SIZE,vcd_get_msf(vcd)*VCD_SECTOR_SIZE)
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!= VCD_SECTOR_SIZE) return 0; // EOF?
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vcd_inc_msf(vcd);
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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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