stream/vcd_read.h

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #ifndef MPLAYER_VCD_READ_H
  20 #define MPLAYER_VCD_READ_H
  21
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <errno.h>
  25 #include <sys/ioctl.h>
  26 #include "mp_msg.h"
  27 #include "stream.h"
  28 #include "ffmpeg_files/intreadwrite.h"
  29 //=================== VideoCD ==========================
  30 #if     defined(__linux__) || defined(sun) || defined(__bsdi__)
  31
  32 typedef struct mp_vcd_priv_st mp_vcd_priv_t;
  33
  34 #if     defined(__linux__)
  35 #include <linux/cdrom.h>
  36 #elif   defined(sun)
  37 #include <sys/cdio.h>
  38 static int sun_vcd_read(mp_vcd_priv_t*, int*);
  39 #elif   defined(__bsdi__)
  40 #include <dvd.h>
  41 #endif
  42
  43 struct mp_vcd_priv_st {
  44   int fd;
  45   struct cdrom_tocentry entry;
  46   char buf[VCD_SECTOR_SIZE];
  47   struct cdrom_tochdr tochdr;
  48 };
  49
  50 static inline void vcd_set_msf(mp_vcd_priv_t* vcd, unsigned int sect){
  51   sect += 150;
  52   vcd->entry.cdte_addr.msf.frame=sect%75;
  53   sect=sect/75;
  54   vcd->entry.cdte_addr.msf.second=sect%60;
  55   sect=sect/60;
  56   vcd->entry.cdte_addr.msf.minute=sect;
  57 }
  58
  59 static inline unsigned int vcd_get_msf(mp_vcd_priv_t* vcd){
  60   return vcd->entry.cdte_addr.msf.frame +
  61         (vcd->entry.cdte_addr.msf.second+
  62          vcd->entry.cdte_addr.msf.minute*60)*75 - 150;
  63 }
  64
  65 int vcd_seek_to_track(mp_vcd_priv_t* vcd,int track){
  66   vcd->entry.cdte_format = CDROM_MSF;
  67   vcd->entry.cdte_track  = track;
  68   if (ioctl(vcd->fd, CDROMREADTOCENTRY, &vcd->entry)) {
  69     mp_msg(MSGT_STREAM,MSGL_ERR,"ioctl dif1: %s\n",strerror(errno));
  70     return -1;
  71   }
  72   return VCD_SECTOR_DATA*vcd_get_msf(vcd);
  73 }
  74
  75 static int vcd_get_track_end(mp_vcd_priv_t* vcd,int track){
  76   vcd->entry.cdte_format = CDROM_MSF;
  77   vcd->entry.cdte_track  = track<vcd->tochdr.cdth_trk1?(track+1):CDROM_LEADOUT;
  78   if (ioctl(vcd->fd, CDROMREADTOCENTRY, &vcd->entry)) {
  79     mp_msg(MSGT_STREAM,MSGL_ERR,"ioctl dif2: %s\n",strerror(errno));
  80     return -1;
  81   }
  82   return VCD_SECTOR_DATA*vcd_get_msf(vcd);
  83 }
  84
  85 static mp_vcd_priv_t* vcd_read_toc(int fd){
  86   struct cdrom_tochdr tochdr;
  87   mp_vcd_priv_t* vcd;
  88   int i, min = 0, sec = 0, frame = 0;
  89   if (ioctl(fd,CDROMREADTOCHDR,&tochdr)==-1) {
  90     mp_msg(MSGT_OPEN,MSGL_ERR,"read CDROM toc header: %s\n",strerror(errno));
  91     return NULL;
  92   }
  93   mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_START_TRACK=%d\n", tochdr.cdth_trk0);
  94   mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_END_TRACK=%d\n", tochdr.cdth_trk1);
  95   for (i=tochdr.cdth_trk0 ; i<=tochdr.cdth_trk1 + 1; i++){
  96       struct cdrom_tocentry tocentry;
  97
  98       tocentry.cdte_track  = i<=tochdr.cdth_trk1 ? i : CDROM_LEADOUT;
  99       tocentry.cdte_format = CDROM_MSF;
 100
 101       if (ioctl(fd,CDROMREADTOCENTRY,&tocentry)==-1) {
 102         mp_msg(MSGT_OPEN,MSGL_ERR,"read CDROM toc entry: %s\n",strerror(errno));
 103         return NULL;
 104       }
 105
 106       if (i<=tochdr.cdth_trk1)
 107       mp_msg(MSGT_OPEN,MSGL_INFO,"track %02d:  adr=%d  ctrl=%d  format=%d  %02d:%02d:%02d  mode: %d\n",
 108           (int)tocentry.cdte_track,
 109           (int)tocentry.cdte_adr,
 110           (int)tocentry.cdte_ctrl,
 111           (int)tocentry.cdte_format,
 112           (int)tocentry.cdte_addr.msf.minute,
 113           (int)tocentry.cdte_addr.msf.second,
 114           (int)tocentry.cdte_addr.msf.frame,
 115           (int)tocentry.cdte_datamode
 116       );
 117
 118       if (mp_msg_test(MSGT_IDENTIFY, MSGL_INFO))
 119       {
 120         if (i > tochdr.cdth_trk0)
 121         {
 122           min = tocentry.cdte_addr.msf.minute - min;
 123           sec = tocentry.cdte_addr.msf.second - sec;
 124           frame = tocentry.cdte_addr.msf.frame - frame;
 125           if ( frame < 0 )
 126           {
 127             frame += 75;
 128             sec --;
 129           }
 130           if ( sec < 0 )
 131           {
 132             sec += 60;
 133             min --;
 134           }
 135           mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_TRACK_%d_MSF=%02d:%02d:%02d\n", i - 1, min, sec, frame);
 136         }
 137         min = tocentry.cdte_addr.msf.minute;
 138         sec = tocentry.cdte_addr.msf.second;
 139         frame = tocentry.cdte_addr.msf.frame;
 140       }
 141     }
 142   vcd = malloc(sizeof(mp_vcd_priv_t));
 143   vcd->fd = fd;
 144   vcd->tochdr = tochdr;
 145   return vcd;
 146 }
 147
 148 static int vcd_read(mp_vcd_priv_t* vcd,char *mem){
 149 #if     defined(__linux__) || defined(__bsdi__)
 150   memcpy(vcd->buf,&vcd->entry.cdte_addr.msf,sizeof(struct cdrom_msf));
 151   if(ioctl(vcd->fd,CDROMREADRAW,vcd->buf)==-1) return 0; // EOF?
 152   memcpy(mem,&vcd->buf[VCD_SECTOR_OFFS],VCD_SECTOR_DATA);
 153 #elif   defined(sun)
 154   {
 155     int offset;
 156     if (sun_vcd_read(vcd, &offset) <= 0) return 0;
 157     memcpy(mem,&vcd->buf[offset],VCD_SECTOR_DATA);
 158   }
 159 #endif
 160
 161   vcd->entry.cdte_addr.msf.frame++;
 162   if (vcd->entry.cdte_addr.msf.frame==75){
 163     vcd->entry.cdte_addr.msf.frame=0;
 164     vcd->entry.cdte_addr.msf.second++;
 165     if (vcd->entry.cdte_addr.msf.second==60){
 166       vcd->entry.cdte_addr.msf.second=0;
 167       vcd->entry.cdte_addr.msf.minute++;
 168     }
 169   }
 170
 171   return VCD_SECTOR_DATA;
 172 }
 173
 174
 175 #ifdef  sun
 176 #include <sys/scsi/generic/commands.h>
 177 #include <sys/scsi/impl/uscsi.h>
 178
 179 #define SUN_XAREAD      1       /*fails on atapi drives*/
 180 #define SUN_MODE2READ   2       /*fails on atapi drives*/
 181 #define SUN_SCSIREAD    3
 182 #define SUN_VCDREAD     SUN_SCSIREAD
 183
 184 static int sun_vcd_read(mp_vcd_priv_t* vcd, int *offset)
 185 {
 186 #if SUN_VCDREAD == SUN_XAREAD
 187   struct cdrom_cdxa cdxa;
 188   cdxa.cdxa_addr = vcd_get_msf(vcd);
 189   cdxa.cdxa_length = 1;
 190   cdxa.cdxa_data = vcd->buf;
 191   cdxa.cdxa_format = CDROM_XA_SECTOR_DATA;
 192
 193   if(ioctl(vcd->fd,CDROMCDXA,&cdxa)==-1) {
 194     mp_msg(MSGT_STREAM,MSGL_ERR,"CDROMCDXA: %s\n",strerror(errno));
 195     return 0;
 196   }
 197   *offset = 0;
 198 #elif SUN_VCDREAD == SUN_MODE2READ
 199   struct cdrom_read cdread;
 200   cdread.cdread_lba = 4*vcd_get_msf(vcd);
 201   cdread.cdread_bufaddr = vcd->buf;
 202   cdread.cdread_buflen = 2336;
 203
 204   if(ioctl(vcd->fd,CDROMREADMODE2,&cdread)==-1) {
 205     mp_msg(MSGT_STREAM,MSGL_ERR,"CDROMREADMODE2: %s\n",strerror(errno));
 206     return 0;
 207   }
 208   *offset = 8;
 209 #elif SUN_VCDREAD == SUN_SCSIREAD
 210   struct uscsi_cmd sc;
 211   union scsi_cdb cdb;
 212   int lba = vcd_get_msf(vcd);
 213   int blocks = 1;
 214
 215   memset(&cdb, 0, sizeof(cdb));
 216   memset(&sc, 0, sizeof(sc));
 217   cdb.scc_cmd = 0xBE;
 218   cdb.cdb_opaque[1] = 5 << 2; // mode2 / form2
 219   AV_WB32(&cdb.cdb_opaque[2], lba);
 220   AV_WB24(&cdb.cdb_opaque[6], blocks);
 221   cdb.cdb_opaque[9] = 1 << 4; // user data only
 222   cdb.cdb_opaque[10] = 0;     // subchannel
 223
 224   sc.uscsi_cdb = (caddr_t)&cdb;
 225   sc.uscsi_cdblen = 12;
 226   sc.uscsi_bufaddr = vcd->buf;
 227   sc.uscsi_buflen = 2336;
 228   sc.uscsi_flags = USCSI_ISOLATE | USCSI_READ;
 229   sc.uscsi_timeout = 20;
 230   if (ioctl(vcd->fd, USCSICMD, &sc)) {
 231       mp_msg(MSGT_STREAM,MSGL_ERR,"USCSICMD: READ CD: %s\n",strerror(errno));
 232       return -1;
 233   }
 234   if (sc.uscsi_status) {
 235       mp_msg(MSGT_STREAM,MSGL_ERR,"scsi command failed with status %d\n", sc.uscsi_status);
 236       return -1;
 237   }
 238   *offset = 0;
 239   return 1;
 240 #else
 241 #error SUN_VCDREAD
 242 #endif
 243 }
 244 #endif  /*sun*/
 245
 246 #else /* __linux__ || sun || __bsdi__ */
 247
 248 #error vcd is not yet supported on this arch...
 249
 250 #endif
 251
 252 #endif /* MPLAYER_VCD_READ_H */