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 static int vcd_seek_to_track(mp_vcd_priv_t* vcd, int track)
  66 {
  67   vcd->entry.cdte_format = CDROM_MSF;
  68   vcd->entry.cdte_track  = track;
  69   if (ioctl(vcd->fd, CDROMREADTOCENTRY, &vcd->entry)) {
  70     mp_msg(MSGT_STREAM,MSGL_ERR,"ioctl dif1: %s\n",strerror(errno));
  71     return -1;
  72   }
  73   return VCD_SECTOR_DATA*vcd_get_msf(vcd);
  74 }
  75
  76 static int vcd_get_track_end(mp_vcd_priv_t* vcd,int track){
  77   vcd->entry.cdte_format = CDROM_MSF;
  78   vcd->entry.cdte_track  = track<vcd->tochdr.cdth_trk1?(track+1):CDROM_LEADOUT;
  79   if (ioctl(vcd->fd, CDROMREADTOCENTRY, &vcd->entry)) {
  80     mp_msg(MSGT_STREAM,MSGL_ERR,"ioctl dif2: %s\n",strerror(errno));
  81     return -1;
  82   }
  83   return VCD_SECTOR_DATA*vcd_get_msf(vcd);
  84 }
  85
  86 static mp_vcd_priv_t* vcd_read_toc(int fd){
  87   struct cdrom_tochdr tochdr;
  88   mp_vcd_priv_t* vcd;
  89   int i, min = 0, sec = 0, frame = 0;
  90   if (ioctl(fd,CDROMREADTOCHDR,&tochdr)==-1) {
  91     mp_msg(MSGT_OPEN,MSGL_ERR,"read CDROM toc header: %s\n",strerror(errno));
  92     return NULL;
  93   }
  94   mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_START_TRACK=%d\n", tochdr.cdth_trk0);
  95   mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_END_TRACK=%d\n", tochdr.cdth_trk1);
  96   for (i=tochdr.cdth_trk0 ; i<=tochdr.cdth_trk1 + 1; i++){
  97       struct cdrom_tocentry tocentry;
  98
  99       tocentry.cdte_track  = i<=tochdr.cdth_trk1 ? i : CDROM_LEADOUT;
 100       tocentry.cdte_format = CDROM_MSF;
 101
 102       if (ioctl(fd,CDROMREADTOCENTRY,&tocentry)==-1) {
 103         mp_msg(MSGT_OPEN,MSGL_ERR,"read CDROM toc entry: %s\n",strerror(errno));
 104         return NULL;
 105       }
 106
 107       if (i<=tochdr.cdth_trk1)
 108       mp_msg(MSGT_OPEN,MSGL_INFO,"track %02d:  adr=%d  ctrl=%d  format=%d  %02d:%02d:%02d  mode: %d\n",
 109           (int)tocentry.cdte_track,
 110           (int)tocentry.cdte_adr,
 111           (int)tocentry.cdte_ctrl,
 112           (int)tocentry.cdte_format,
 113           (int)tocentry.cdte_addr.msf.minute,
 114           (int)tocentry.cdte_addr.msf.second,
 115           (int)tocentry.cdte_addr.msf.frame,
 116           (int)tocentry.cdte_datamode
 117       );
 118
 119       if (mp_msg_test(MSGT_IDENTIFY, MSGL_INFO))
 120       {
 121         if (i > tochdr.cdth_trk0)
 122         {
 123           min = tocentry.cdte_addr.msf.minute - min;
 124           sec = tocentry.cdte_addr.msf.second - sec;
 125           frame = tocentry.cdte_addr.msf.frame - frame;
 126           if ( frame < 0 )
 127           {
 128             frame += 75;
 129             sec --;
 130           }
 131           if ( sec < 0 )
 132           {
 133             sec += 60;
 134             min --;
 135           }
 136           mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_TRACK_%d_MSF=%02d:%02d:%02d\n", i - 1, min, sec, frame);
 137         }
 138         min = tocentry.cdte_addr.msf.minute;
 139         sec = tocentry.cdte_addr.msf.second;
 140         frame = tocentry.cdte_addr.msf.frame;
 141       }
 142     }
 143   vcd = malloc(sizeof(mp_vcd_priv_t));
 144   vcd->fd = fd;
 145   vcd->tochdr = tochdr;
 146   return vcd;
 147 }
 148
 149 static int vcd_end_track(mp_vcd_priv_t* vcd)
 150 {
 151   return vcd->tochdr.cdth_trk1;
 152 }
 153
 154 static int vcd_read(mp_vcd_priv_t* vcd,char *mem){
 155 #if     defined(__linux__) || defined(__bsdi__)
 156   memcpy(vcd->buf,&vcd->entry.cdte_addr.msf,sizeof(struct cdrom_msf));
 157   if(ioctl(vcd->fd,CDROMREADRAW,vcd->buf)==-1) return 0; // EOF?
 158   memcpy(mem,&vcd->buf[VCD_SECTOR_OFFS],VCD_SECTOR_DATA);
 159 #elif   defined(sun)
 160   {
 161     int offset;
 162     if (sun_vcd_read(vcd, &offset) <= 0) return 0;
 163     memcpy(mem,&vcd->buf[offset],VCD_SECTOR_DATA);
 164   }
 165 #endif
 166
 167   vcd->entry.cdte_addr.msf.frame++;
 168   if (vcd->entry.cdte_addr.msf.frame==75){
 169     vcd->entry.cdte_addr.msf.frame=0;
 170     vcd->entry.cdte_addr.msf.second++;
 171     if (vcd->entry.cdte_addr.msf.second==60){
 172       vcd->entry.cdte_addr.msf.second=0;
 173       vcd->entry.cdte_addr.msf.minute++;
 174     }
 175   }
 176
 177   return VCD_SECTOR_DATA;
 178 }
 179
 180
 181 #ifdef  sun
 182 #include <sys/scsi/generic/commands.h>
 183 #include <sys/scsi/impl/uscsi.h>
 184
 185 #define SUN_XAREAD      1       /*fails on atapi drives*/
 186 #define SUN_MODE2READ   2       /*fails on atapi drives*/
 187 #define SUN_SCSIREAD    3
 188 #define SUN_VCDREAD     SUN_SCSIREAD
 189
 190 static int sun_vcd_read(mp_vcd_priv_t* vcd, int *offset)
 191 {
 192 #if SUN_VCDREAD == SUN_XAREAD
 193   struct cdrom_cdxa cdxa;
 194   cdxa.cdxa_addr = vcd_get_msf(vcd);
 195   cdxa.cdxa_length = 1;
 196   cdxa.cdxa_data = vcd->buf;
 197   cdxa.cdxa_format = CDROM_XA_SECTOR_DATA;
 198
 199   if(ioctl(vcd->fd,CDROMCDXA,&cdxa)==-1) {
 200     mp_msg(MSGT_STREAM,MSGL_ERR,"CDROMCDXA: %s\n",strerror(errno));
 201     return 0;
 202   }
 203   *offset = 0;
 204 #elif SUN_VCDREAD == SUN_MODE2READ
 205   struct cdrom_read cdread;
 206   cdread.cdread_lba = 4*vcd_get_msf(vcd);
 207   cdread.cdread_bufaddr = vcd->buf;
 208   cdread.cdread_buflen = 2336;
 209
 210   if(ioctl(vcd->fd,CDROMREADMODE2,&cdread)==-1) {
 211     mp_msg(MSGT_STREAM,MSGL_ERR,"CDROMREADMODE2: %s\n",strerror(errno));
 212     return 0;
 213   }
 214   *offset = 8;
 215 #elif SUN_VCDREAD == SUN_SCSIREAD
 216   struct uscsi_cmd sc;
 217   union scsi_cdb cdb;
 218   int lba = vcd_get_msf(vcd);
 219   int blocks = 1;
 220
 221   memset(&cdb, 0, sizeof(cdb));
 222   memset(&sc, 0, sizeof(sc));
 223   cdb.scc_cmd = 0xBE;
 224   cdb.cdb_opaque[1] = 5 << 2; // mode2 / form2
 225   AV_WB32(&cdb.cdb_opaque[2], lba);
 226   AV_WB24(&cdb.cdb_opaque[6], blocks);
 227   cdb.cdb_opaque[9] = 1 << 4; // user data only
 228   cdb.cdb_opaque[10] = 0;     // subchannel
 229
 230   sc.uscsi_cdb = (caddr_t)&cdb;
 231   sc.uscsi_cdblen = 12;
 232   sc.uscsi_bufaddr = vcd->buf;
 233   sc.uscsi_buflen = 2336;
 234   sc.uscsi_flags = USCSI_ISOLATE | USCSI_READ;
 235   sc.uscsi_timeout = 20;
 236   if (ioctl(vcd->fd, USCSICMD, &sc)) {
 237       mp_msg(MSGT_STREAM,MSGL_ERR,"USCSICMD: READ CD: %s\n",strerror(errno));
 238       return -1;
 239   }
 240   if (sc.uscsi_status) {
 241       mp_msg(MSGT_STREAM,MSGL_ERR,"scsi command failed with status %d\n", sc.uscsi_status);
 242       return -1;
 243   }
 244   *offset = 0;
 245   return 1;
 246 #else
 247 #error SUN_VCDREAD
 248 #endif
 249 }
 250 #endif  /*sun*/
 251
 252 #else /* __linux__ || sun || __bsdi__ */
 253
 254 #error vcd is not yet supported on this arch...
 255
 256 #endif
 257
 258 #endif /* MPLAYER_VCD_READ_H */