stream/vcd_read_os2.h

   1 /*
   2  * implementation of VCD IO for OS/2
   3  *
   4  * Copyright (c) 2009 KO Myung-Hun (komh@chollian.net)
   5  *
   6  * This file is part of MPlayer.
   7  *
   8  * MPlayer is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * MPlayer is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22
  23 #ifndef MPLAYER_VCD_READ_OS2_H
  24 #define MPLAYER_VCD_READ_OS2_H
  25
  26 #include "mp_msg.h"
  27
  28 struct __attribute__((packed)) msf {
  29     BYTE bFrame;
  30     BYTE bSecond;
  31     BYTE bMinute;
  32     BYTE bReserved;
  33 };
  34
  35 typedef struct {
  36     HFILE      hcd;
  37     struct msf msfCurrent;
  38     int        iFirstTrack;
  39     int        iLastTrack;
  40     struct msf msfLeadOut;
  41     BYTE       abVCDSector[VCD_SECTOR_SIZE];
  42 } mp_vcd_priv_t;
  43
  44 static inline void vcd_set_msf(mp_vcd_priv_t *vcd, unsigned sect)
  45 {
  46     sect += 150;
  47     vcd->msfCurrent.bFrame = sect % 75;
  48     sect = sect / 75;
  49     vcd->msfCurrent.bSecond = sect % 60;
  50     sect = sect / 60;
  51     vcd->msfCurrent.bMinute = sect;
  52 }
  53
  54 static inline unsigned vcd_get_msf(mp_vcd_priv_t *vcd)
  55 {
  56   return vcd->msfCurrent.bFrame  +
  57         (vcd->msfCurrent.bSecond + vcd->msfCurrent.bMinute * 60) * 75 - 150;
  58 }
  59
  60 int vcd_seek_to_track(mp_vcd_priv_t *vcd, int track)
  61 {
  62     struct {
  63         UCHAR auchSign[4];
  64         BYTE  bTrack;
  65     } __attribute__((packed)) sParam = {{'C', 'D', '0', '1'},};
  66
  67     struct {
  68         struct msf msfStart;
  69         BYTE       bControlInfo;
  70     } __attribute__((packed)) sData;
  71
  72     ULONG ulParamLen;
  73     ULONG ulDataLen;
  74     ULONG rc;
  75
  76     sParam.bTrack = track;
  77     rc = DosDevIOCtl(vcd->hcd, IOCTL_CDROMAUDIO, CDROMAUDIO_GETAUDIOTRACK,
  78                      &sParam, sizeof(sParam), &ulParamLen,
  79                      &sData, sizeof(sData), &ulDataLen);
  80     if (rc) {
  81         mp_msg(MSGT_STREAM, MSGL_ERR, "DosDevIOCtl(GETAUDIOTRACK) = 0x%lx\n", rc);
  82         return -1;
  83     }
  84
  85     vcd->msfCurrent = sData.msfStart;
  86
  87     return VCD_SECTOR_DATA * vcd_get_msf(vcd);
  88 }
  89
  90 static int vcd_get_track_end(mp_vcd_priv_t *vcd, int track)
  91 {
  92     if (track < vcd->iLastTrack)
  93         return vcd_seek_to_track(vcd, track + 1);
  94
  95     vcd->msfCurrent = vcd->msfLeadOut;
  96
  97     return VCD_SECTOR_DATA * vcd_get_msf(vcd);
  98 }
  99
 100 static mp_vcd_priv_t *vcd_read_toc(int fd)
 101 {
 102     mp_vcd_priv_t *vcd;
 103
 104     UCHAR auchParamDisk[4] = {'C', 'D', '0', '1'};
 105
 106     struct {
 107         BYTE       bFirstTrack;
 108         BYTE       bLastTrack;
 109         struct msf msfLeadOut;
 110     } __attribute__((packed)) sDataDisk;
 111
 112     struct {
 113         UCHAR auchSign[4];
 114         BYTE  bTrack;
 115     } __attribute__((packed)) sParamTrack = {{'C', 'D', '0', '1'},};
 116
 117     struct {
 118         struct msf msfStart;
 119         BYTE       bControlInfo;
 120     } __attribute__((packed)) sDataTrack;
 121
 122     ULONG ulParamLen;
 123     ULONG ulDataLen;
 124     ULONG rc;
 125     int   i, iMinute = 0, iSecond = 0, iFrame = 0;
 126
 127     rc = DosDevIOCtl(fd, IOCTL_CDROMAUDIO, CDROMAUDIO_GETAUDIODISK,
 128                      auchParamDisk, sizeof(auchParamDisk), &ulParamLen,
 129                      &sDataDisk, sizeof(sDataDisk), &ulDataLen);
 130     if (rc) {
 131         mp_msg(MSGT_OPEN, MSGL_ERR, "DosDevIOCtl(GETAUDIODISK) = 0x%lx\n", rc);
 132         return NULL;
 133     }
 134
 135     mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_START_TRACK=%d\n", sDataDisk.bFirstTrack);
 136     mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_END_TRACK=%d\n", sDataDisk.bLastTrack);
 137
 138     for (i = sDataDisk.bFirstTrack; i <= sDataDisk.bLastTrack + 1; i++) {
 139         if (i <= sDataDisk.bLastTrack) {
 140             sParamTrack.bTrack = i;
 141             rc = DosDevIOCtl(fd, IOCTL_CDROMAUDIO, CDROMAUDIO_GETAUDIOTRACK,
 142                              &sParamTrack, sizeof(sParamTrack), &ulParamLen,
 143                              &sDataTrack, sizeof(sDataTrack), &ulDataLen);
 144             if (rc) {
 145                 mp_msg(MSGT_OPEN, MSGL_ERR, "DosDevIOCtl(GETAUDIOTRACK) = 0x%lx\n", rc);
 146                 return NULL;
 147             }
 148
 149             mp_msg(MSGT_OPEN, MSGL_INFO, "track %02d:  adr=%d  ctrl=%d  %02d:%02d:%02d\n",
 150                    i,
 151                    sDataTrack.bControlInfo & 0x0F,
 152                    sDataTrack.bControlInfo >> 4,
 153                    sDataTrack.msfStart.bMinute,
 154                    sDataTrack.msfStart.bSecond,
 155                    sDataTrack.msfStart.bFrame);
 156         } else
 157             sDataTrack.msfStart = sDataDisk.msfLeadOut;
 158
 159         if (mp_msg_test(MSGT_IDENTIFY, MSGL_INFO)) {
 160             if (i > sDataDisk.bFirstTrack) {
 161                 iMinute = sDataTrack.msfStart.bMinute - iMinute;
 162                 iSecond = sDataTrack.msfStart.bSecond - iSecond;
 163                 iFrame  = sDataTrack.msfStart.bFrame  - iFrame;
 164                 if (iFrame < 0) {
 165                     iFrame += 75;
 166                     iSecond--;
 167                 }
 168                 if (iSecond < 0) {
 169                     iSecond += 60;
 170                     iMinute--;
 171                 }
 172                 mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_TRACK_%d_MSF=%02d:%02d:%02d\n",
 173                        i - 1, iMinute, iSecond, iFrame);
 174             }
 175
 176             iMinute = sDataTrack.msfStart.bMinute;
 177             iSecond = sDataTrack.msfStart.bSecond;
 178             iFrame  = sDataTrack.msfStart.bFrame;
 179         }
 180     }
 181
 182     vcd                 = calloc(1, sizeof(mp_vcd_priv_t));
 183     vcd->hcd            = fd;
 184     vcd->iFirstTrack    = sDataDisk.bFirstTrack;
 185     vcd->iLastTrack     = sDataDisk.bLastTrack;
 186     vcd->msfLeadOut     = sDataDisk.msfLeadOut;
 187
 188     return vcd;
 189 }
 190
 191 static int vcd_read(mp_vcd_priv_t *vcd, char *mem)
 192 {
 193     struct {
 194         UCHAR      auchSign[4];
 195         BYTE       bAddrMode;
 196         USHORT     usSectors;
 197         struct msf msfStart;
 198         BYTE       bReserved;
 199         BYTE       bInterleavedSize;
 200     } __attribute__((packed)) sParam = {{'C', 'D', '0', '1'}, 1, 1,};
 201
 202     ULONG ulParamLen;
 203     ULONG ulDataLen;
 204     ULONG rc;
 205
 206     /* lead-out ? */
 207     if (vcd->msfCurrent.bMinute == vcd->msfLeadOut.bMinute &&
 208         vcd->msfCurrent.bSecond == vcd->msfLeadOut.bSecond &&
 209         vcd->msfCurrent.bFrame  == vcd->msfLeadOut.bFrame)
 210         return 0;
 211
 212     sParam.msfStart = vcd->msfCurrent;
 213     rc = DosDevIOCtl(vcd->hcd, IOCTL_CDROMDISK, CDROMDISK_READLONG,
 214                      &sParam, sizeof(sParam), &ulParamLen,
 215                      vcd->abVCDSector, sizeof(vcd->abVCDSector), &ulDataLen);
 216     if (rc) {
 217         mp_msg(MSGT_STREAM, MSGL_ERR, "DosDevIOCtl(READLONG) = 0x%lx\n", rc);
 218         return 0;
 219     }
 220
 221     memcpy(mem, &vcd->abVCDSector[VCD_SECTOR_OFFS], VCD_SECTOR_DATA);
 222
 223     vcd->msfCurrent.bFrame++;
 224     if (vcd->msfCurrent.bFrame == 75) {
 225         vcd->msfCurrent.bFrame = 0;
 226         vcd->msfCurrent.bSecond++;
 227         if (vcd->msfCurrent.bSecond == 60) {
 228             vcd->msfCurrent.bSecond = 0;
 229             vcd->msfCurrent.bMinute++;
 230         }
 231     }
 232
 233     return VCD_SECTOR_DATA;
 234 }
 235
 236 #endif /* MPLAYER_VCD_READ_OS2_H */
 237