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/* --------------------------------------------------------------------------
MusicBrainz -- The Internet music metadatabase
Copyright (C) 2000 Robert Kaye
Copyright (C) 1999 Marc E E van Woerkom
Copyright (C) 1999 Ben Wong
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
$Id: mb_irix.cpp,v 1.2 2000/09/22 14:15:02 robert Exp $
----------------------------------------------------------------------------*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <assert.h>
#include <netinet/in.h>
#include <signal.h>
#include "mb.h"
#include "diskid.h"
#include "config.h"
// Irix will just magically find the CD-ROM when told to open NULL.
MUSICBRAINZ_DEVICE DEFAULT_DEVICE = 0;
int ReadTOCHeader(CDPLAYER* fd,
int& first,
int& last)
{
CDSTATUS tochdr;
// CDgetstatus returns 0 on error but we return 0 on success.
int ret = !CDgetstatus(fd, &tochdr);
if (!ret)
{
first = tochdr.first;
last = tochdr.last;
}
return ret;
}
int ReadTOCEntry(CDPLAYER* fd,
int track,
int& lba)
{
CDTRACKINFO trackinfo;
// CDgettrackinfo returns 0 on error but we return 0 on success.
int ret = !CDgettrackinfo(fd, track, &trackinfo);
if (!ret)
{
// trackinfo has Min/Sec/Frame but we want a Logical Block Address.
lba = CDmsftoblock(fd,
trackinfo.start_min,
trackinfo.start_sec,
trackinfo.start_frame);
}
return ret;
}
// Return one past the *end* of the track requested instead of the
// start. (Equivalent to "start of the next track" but works even when
// the next track doesn't exist).
int ReadTOCEntryEnd(CDPLAYER* fd,
int track,
int &lba)
{
CDTRACKINFO trackinfo;
// CDgettrackinfo returns 0 on error but we return 0 on success.
int ret = !CDgettrackinfo(fd, track, &trackinfo);
if (!ret)
{
// trackinfo has Min/Sec/Frame but we want a Logical Block Address.
lba = CDmsftoblock(fd,
trackinfo.start_min+trackinfo.total_min,
trackinfo.start_sec+trackinfo.total_sec,
trackinfo.start_frame+trackinfo.total_frame)+1;
}
return ret;
}
bool DiskId::ReadTOC(MUSICBRAINZ_DEVICE device,
MUSICBRAINZ_CDINFO& cdinfo)
{
CDSTATUS status;
CDPLAYER *fd = CDopen(device, "r");
int first, last;
int lba, i;
char err[256];
if (!fd || !CDgetstatus(fd, &status))
{
sprintf(err, "Cannot open %s",
device ? device : "any CD-ROM");
if (!fd)
sprintf(err + strlen(err), ": %s", strerror(errno));
ReportError(err);
return false;
}
// Check if the CD-ROM is ready, has a disk in it, isn't already playing.
if (status.state != CD_READY)
{
strcpy(err, "The CD-ROM isn't ready. Reason: ");
switch (status.state) {
case CD_NODISC:
strcat(err, "The drive does not have a CD loaded.");
break;
case CD_CDROM:
strcat(err, "The drive is loaded with a CD-ROM. Subsequent ");
strcat(err, "play or read operations will return I/O errors.");
break;
case CD_ERROR:
strcat(err, "An error occurred while trying to read the disc or");
strcat(err, " it table of contents.");
break;
case CD_PLAYING:
strcat(err, "The drive is in CD player mode playing an audio ");
strcat(err, "CD through its audio jacks.");
break;
case CD_PAUSED:
case CD_STILL:
strcat(err, "The drive is in CD player mode with play paused.");
break;
default:
strcat(err, "An unknown error occured.");
}
ReportError(err);
return false;
}
// Initialize cdinfo to all zeroes.
memset(&cdinfo, 0, sizeof(MUSICBRAINZ_CDINFO));
// Find the number of the first track (usually 1) and the last track.
if (ReadTOCHeader(fd, first, last))
{
ReportError("Cannot read table of contents.");
CDclose(fd);
return false;
}
// Do some basic error checking.
if (last==0)
{
ReportError("This disk has no tracks.");
CDclose(fd);
return false;
}
// Get the block address for the end of the audio data.
// The "LEADOUT" track is the track beyond the final audio track
// so we're looking for the block address of the LEADOUT track.
ReadTOCEntryEnd(fd, last, lba);
cdinfo.FrameOffset[0] = lba + 150;
// Now, for every track, find out the block address where it starts.
for (i = first; i <= last; i++)
{
ReadTOCEntry(fd, i, lba);
cdinfo.FrameOffset[i] = lba + 150;
}
cdinfo.FirstTrack = first;
cdinfo.LastTrack = last;
CDclose(fd);
return true;
}
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