stream/vcd_read_fbsd.h

   1 #include <sys/cdio.h>
   2 #include <sys/cdrio.h>
   3
   4 //=================== VideoCD ==========================
   5 #define CDROM_LEADOUT   0xAA
   6
   7 typedef struct {
   8         uint8_t sync            [12];
   9         uint8_t header          [4];
  10         uint8_t subheader       [8];
  11         uint8_t data            [2324];
  12         uint8_t spare           [4];
  13 } cdsector_t;
  14
  15 typedef struct mp_vcd_priv_st {
  16   int fd;
  17   struct ioc_read_toc_single_entry entry;
  18   cdsector_t buf;
  19 } mp_vcd_priv_t;
  20
  21 static inline void vcd_set_msf(mp_vcd_priv_t* vcd, unsigned int sect){
  22   vcd->entry.entry.addr.msf.frame=sect%75;
  23   sect=sect/75;
  24   vcd->entry.entry.addr.msf.second=sect%60;
  25   sect=sect/60;
  26   vcd->entry.entry.addr.msf.minute=sect;
  27 }
  28
  29 static inline unsigned int vcd_get_msf(mp_vcd_priv_t* vcd){
  30   return vcd->entry.entry.addr.msf.frame +
  31         (vcd->entry.entry.addr.msf.second+
  32          vcd->entry.entry.addr.msf.minute*60)*75;
  33 }
  34
  35 int vcd_seek_to_track(mp_vcd_priv_t* vcd, int track){
  36   vcd->entry.address_format = CD_MSF_FORMAT;
  37   vcd->entry.track  = track;
  38   if (ioctl(vcd->fd, CDIOREADTOCENTRY, &vcd->entry)) {
  39     mp_msg(MSGT_STREAM,MSGL_ERR,"ioctl dif1: %s\n",strerror(errno));
  40     return -1;
  41   }
  42   return VCD_SECTOR_DATA*vcd_get_msf(vcd);
  43 }
  44
  45 int vcd_get_track_end(mp_vcd_priv_t* vcd, int track){
  46   struct ioc_toc_header tochdr;
  47   if (ioctl(vcd->fd,CDIOREADTOCHEADER,&tochdr)==-1) {
  48     mp_msg(MSGT_STREAM,MSGL_ERR,"read CDROM toc header: %s\n",strerror(errno));
  49     return -1;
  50   }
  51   vcd->entry.address_format = CD_MSF_FORMAT;
  52   vcd->entry.track  = track<tochdr.ending_track?(track+1):CDROM_LEADOUT;
  53   if (ioctl(vcd->fd, CDIOREADTOCENTRY, &vcd->entry)) {
  54     mp_msg(MSGT_STREAM,MSGL_ERR,"ioctl dif2: %s\n",strerror(errno));
  55     return -1;
  56   }
  57   return VCD_SECTOR_DATA*vcd_get_msf(vcd);
  58 }
  59
  60 mp_vcd_priv_t* vcd_read_toc(int fd){
  61   struct ioc_toc_header tochdr;
  62   mp_vcd_priv_t* vcd;
  63   int i, min = 0, sec = 0, frame = 0;
  64   if (ioctl(fd,CDIOREADTOCHEADER,&tochdr)==-1) {
  65     mp_msg(MSGT_OPEN,MSGL_ERR,"read CDROM toc header: %s\n",strerror(errno));
  66     return NULL;
  67   }
  68   mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_START_TRACK=%d\n", tochdr.starting_track);
  69   mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_END_TRACK=%d\n", tochdr.ending_track);
  70   for (i=tochdr.starting_track ; i<=tochdr.ending_track + 1; i++){
  71       struct ioc_read_toc_single_entry tocentry;
  72
  73       tocentry.track  = i<=tochdr.ending_track ? i : CDROM_LEADOUT;
  74       tocentry.address_format = CD_MSF_FORMAT;
  75
  76       if (ioctl(fd,CDIOREADTOCENTRY,&tocentry)==-1) {
  77         mp_msg(MSGT_OPEN,MSGL_ERR,"read CDROM toc entry: %s\n",strerror(errno));
  78         return NULL;
  79       }
  80
  81       if (i<=tochdr.ending_track)
  82       mp_msg(MSGT_OPEN,MSGL_INFO,"track %02d:  adr=%d  ctrl=%d  format=%d  %02d:%02d:%02d\n",
  83           (int)tocentry.track,
  84           (int)tocentry.entry.addr_type,
  85           (int)tocentry.entry.control,
  86           (int)tocentry.address_format,
  87           (int)tocentry.entry.addr.msf.minute,
  88           (int)tocentry.entry.addr.msf.second,
  89           (int)tocentry.entry.addr.msf.frame
  90       );
  91
  92       if (mp_msg_test(MSGT_IDENTIFY, MSGL_INFO))
  93       {
  94         if (i > tochdr.starting_track)
  95         {
  96           min = tocentry.entry.addr.msf.minute - min;
  97           sec = tocentry.entry.addr.msf.second - sec;
  98           frame = tocentry.entry.addr.msf.frame - frame;
  99           if ( frame < 0 )
 100           {
 101             frame += 75;
 102             sec --;
 103           }
 104           if ( sec < 0 )
 105           {
 106             sec += 60;
 107             min --;
 108           }
 109           mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_TRACK_%d_MSF=%02d:%02d:%02d\n", i - 1, min, sec, frame);
 110         }
 111         min = tocentry.entry.addr.msf.minute;
 112         sec = tocentry.entry.addr.msf.second;
 113         frame = tocentry.entry.addr.msf.frame;
 114       }
 115     }
 116   vcd = malloc(sizeof(mp_vcd_priv_t));
 117   vcd->fd = fd;
 118   return vcd;
 119 }
 120
 121 static int vcd_read(mp_vcd_priv_t* vcd,char *mem){
 122
 123       if (pread(vcd->fd,&vcd->buf,VCD_SECTOR_SIZE,vcd_get_msf(vcd)*VCD_SECTOR_SIZE)
 124          != VCD_SECTOR_SIZE) return 0;  // EOF?
 125
 126       vcd->entry.entry.addr.msf.frame++;
 127       if (vcd->entry.entry.addr.msf.frame==75){
 128         vcd->entry.entry.addr.msf.frame=0;
 129         vcd->entry.entry.addr.msf.second++;
 130         if (vcd->entry.entry.addr.msf.second==60){
 131           vcd->entry.entry.addr.msf.second=0;
 132           vcd->entry.entry.addr.msf.minute++;
 133         }
 134       }
 135       memcpy(mem,vcd->buf.data,VCD_SECTOR_DATA);
 136       return VCD_SECTOR_DATA;
 137 }
 138