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* $Id: plat_ultrix.c,v 1.9 2001/04/10 17:34:52 dfoerste Exp $
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* This file is part of WorkMan, the civilized CD player library
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* (c) 1991-1997 by Steven Grimm (original author)
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* (c) by Dirk F�rsterling (current 'author' = maintainer)
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* The maintainer can be contacted by his e-mail address:
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* milliByte@DeathsDoor.com
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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* ULTRIX 4.2 drive control routines.
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static char plat_ultrix_id[] = "$Id: plat_ultrix.c,v 1.9 2001/04/10 17:34:52 dfoerste Exp $";
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#if defined(ultrix) || defined(__ultrix)
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/rzdisk.h>
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#include <sys/cdrom.h>
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#include "include/wm_config.h"
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#include "include/wm_cdtext.h"
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#include "include/wm_struct.h"
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#define WM_MSG_CLASS WM_MSG_CLASS_PLATFORM
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* This structure will be filled with the TOC header and all entries.
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* Ultrix doesn't seem to allow getting single TOC entries.
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* - Chris Ross (cross@eng.umd.edu)
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struct cd_toc_header_and_entries
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struct cd_toc_header cdth;
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struct cd_toc_entry cdte[CDROM_MAX_TRACK+1];
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extern char *cd_device;
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* Simulate fgets, but joining continued lines in the output of uerf.
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#define BUF_SIZE 85 /* Max length of a (real) line */
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static char *retval = NULL;
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static char holdbuf[BUF_SIZE + 1];
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char tmp[BUF_SIZE + 1];
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retval = malloc(BUF_SIZE * 3); /* 3 lines can be joined */
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strcpy(retval, holdbuf);
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retval[strlen(retval)-1] = '\0';
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memset(holdbuf, 0, BUF_SIZE+1);
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while (fgets(tmp, BUF_SIZE, fp))
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stmp = tmp + strspn(tmp, " \t");
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{ /* Continuation line */
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retval[strlen(retval)-1] = '\0'; /* Trim off C/R */
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strcat(retval, stmp+1);
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strcpy(holdbuf, tmp);
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holdbuf[strlen(holdbuf)-1] = -1;
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} else { /* First line read, keep reading */
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strcat(retval, stmp);
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retval[strlen(retval)-1] = '\0';
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* Determine the name of the CD-ROM device.
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* Read through the boot records (via a call to uerf) and find the SCSI
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* address of the CD-ROM. If the "CDROM" environment variable is set,
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cd_device = getenv("CDROM");
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if (cd_device != NULL)
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if(strncmp("/dev/", cd_device, 5) || strstr(cd_device, "/../"))
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if ((pid = fork()) == 0)
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execl("/etc/uerf", "uerf", "-R", "-r", "300", NULL);
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execl("/usr/sbin/uerf", "uerf", "-R", "-r", "300", NULL);
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return 0; /* _exit(1); */
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} else if (pid < 0) {
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return 0; /* exit(1); */
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uerf = fdopen(fds[0], "r");
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while (data = fgetline(uerf))
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if (strstr(data, "RRD42"))
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cd_device = (char *)malloc(sizeof("/dev/rrz##c"));
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strcpy(cd_device, "/dev/r");
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device = strstr(data, "rz");
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device[(int)(strchr(device, ' ') - device)] = '\0';
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strcat(cd_device, device);
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strcat(cd_device, "c");
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if (cd_device == NULL)
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"No cdrom (RRD42) is installed on this system\n");
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return 0; /* exit(1); */
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(void)wait((int *)NULL);
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* initialize the drive. a no-op for the generic driver.
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gen_init( struct wm_drive *d )
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* Open the CD device and figure out what kind of drive is attached.
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wmcd_open( struct wm_drive *d )
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static int warned = 0;
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if (d->fd >= 0) /* Device already open? */
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wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "wmcd_open(): [device is open (fd=%d)]\n", d->fd);
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if (cd_device == NULL)
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d->fd = open(cd_device, 0);
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else if (errno != EINTR)
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/* No CD in drive. */
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/* Now fill in the relevant parts of the wm_drive structure. */
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*d = *(find_drive_struct("", "", ""));
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* Re-Open the device if it is open.
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wmcd_reopen( struct wm_drive *d )
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wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "wmcd_reopen\n");
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if (d->fd >= 0) /* Device really open? */
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wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "closing the device\n");
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status = close( d->fd ); /* close it! */
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/* we know, that the file is closed, do we? */
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wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "calling wmcd_open()\n");
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status = wmcd_open( d ); /* open it as usual */
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} while ( status != 0 );
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} /* wmcd_reopen() */
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* Send an arbitrary SCSI command to a device.
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wm_scsi( struct wm_drive *d, unsigned char *cdb, int cdblen,
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void *retbuf, int retbuflen, int getreply )
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/* ULTRIX doesn't have a SCSI passthrough interface, does it? */
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* Get the current status of the drive: the current play mode, the absolute
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* position from start of disc (in frames), and the current track and index
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* numbers if the CD is playing or paused.
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gen_get_drive_status( struct wm_drive *d, enum wm_cd_modes oldmode,
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enum wm_cd_modes *mode, int *pos, int *track, int *index)
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struct cd_sub_channel sc;
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struct cd_subc_channel_data scd;
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/* If we can't get status, the CD is ejected, so default to that. */
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*mode = WM_CDM_EJECTED;
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sc.sch_address_format = CDROM_MSF_FORMAT;
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sc.sch_data_format = CDROM_CURRENT_POSITION;
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sc.sch_track_number = 0;
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sc.sch_alloc_length = sizeof(scd);
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sc.sch_buffer = (caddr_t)&scd;
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/* Is the device open? */
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switch (wmcd_open(d))
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if (ioctl(d->fd, CDROM_READ_SUBCHANNEL, &sc))
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return (0); /* ejected */
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switch (scd.scd_header.sh_audio_status)
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case AS_PLAY_IN_PROGRESS:
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*mode = WM_CDM_PLAYING;
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*pos = scd.scd_position_data.scp_absaddr.msf.m_units * 60 * 75 +
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scd.scd_position_data.scp_absaddr.msf.s_units * 75 +
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scd.scd_position_data.scp_absaddr.msf.f_units;
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*track = scd.scd_position_data.scp_track_number;
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*index = scd.scd_position_data.scp_index_number;
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if (oldmode == WM_CDM_PLAYING || oldmode == WM_CDM_PAUSED)
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*mode = WM_CDM_PAUSED;
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*mode = WM_CDM_STOPPED;
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case AS_PLAY_COMPLETED:
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*mode = WM_CDM_TRACK_DONE; /* waiting for next track. */
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*mode = WM_CDM_STOPPED;
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} /* gen_get_drive_status() */
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* Get the number of tracks on the CD.
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gen_get_trackcount( struct wm_drive *d, int *tracks )
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struct cd_toc_header hdr;
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if (ioctl(d->fd, CDROM_TOC_HEADER, &hdr))
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*tracks = hdr.th_ending_track;
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} /* gen_get_trackcount() */
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* Get the start time and mode (data or audio) of a track.
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* XXX - this should get cached, but that means keeping track of ejects.
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gen_get_trackinfo(struct wm_drive *d, int track, int *data, int *startframe)
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struct cd_toc_header hdr;
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struct cd_toc_header_and_entries toc_buffer;
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if (ioctl(d->fd, CDROM_TOC_HEADER, &hdr))
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bzero((char *)&toc_buffer, sizeof(toc_buffer));
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toc.toc_address_format = CDROM_MSF_FORMAT;
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toc.toc_starting_track = 0;
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toc.toc_alloc_length = (u_short)(((hdr.th_data_len1 << 8) +
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hdr.th_data_len0) & 0xfff) + 2;
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toc.toc_buffer = (caddr_t)&toc_buffer;
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if (ioctl(d->fd, CDROM_TOC_ENTRYS, &toc))
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track = hdr.th_ending_track + 1;
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*data = (toc_buffer.cdte[track-1].te_control & CDROM_DATA_TRACK) ? 1:0;
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*startframe = toc_buffer.cdte[track - 1].te_absaddr.msf.m_units*60*75 +
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toc_buffer.cdte[track - 1].te_absaddr.msf.s_units * 75 +
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toc_buffer.cdte[track - 1].te_absaddr.msf.f_units;
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} /* gen_get_trackinfo() */
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* Get the number of frames on the CD.
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gen_get_cdlen(struct wm_drive *d, int *frames)
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return (gen_get_trackinfo(d, 0, &tmp, frames));
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} /* gen_get_cdlen() */
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* Play the CD from one position to another (both in frames.)
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gen_play( struct wm_drive *d, int start, int end )
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struct cd_play_audio_msf msf;
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msf.msf_starting_M_unit = start / (60*75);
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msf.msf_starting_S_unit = (start % (60*75)) / 75;
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msf.msf_starting_F_unit = start % 75;
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msf.msf_ending_M_unit = end / (60*75);
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msf.msf_ending_S_unit = (end % (60*75)) / 75;
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msf.msf_ending_F_unit = end % 75;
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if (ioctl(d->fd, SCSI_START_UNIT))
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if (ioctl(d->fd, CDROM_PLAY_MSF, &msf))
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gen_pause( struct wm_drive *d )
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return (ioctl(d->fd, CDROM_PAUSE_PLAY));
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* Resume playing the CD (assuming it was paused.)
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gen_resume( struct wm_drive *d )
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return (ioctl(d->fd, CDROM_RESUME_PLAY));
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gen_stop( struct wm_drive *d )
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return (ioctl(d->fd, SCSI_STOP_UNIT));
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* Eject the current CD, if there is one.
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gen_eject(struct wm_drive *d)
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/* On some systems, we can check to see if the CD is mounted. */
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if (fstat(d->fd, &stbuf) != 0)
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/* Is this a mounted filesystem? */
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if (ustat(stbuf.st_rdev, &ust) == 0)
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return (ioctl(d->fd, CDROM_EJECT_CADDY));
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/*----------------------------------------*
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* Please edit and send changes to
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* milliByte@DeathsDoor.com
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*----------------------------------------*/
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gen_closetray(struct wm_drive *d)
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return(wmcd_reopen(d));
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/* Always succeed if the drive can't close */
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#endif /* CAN_CLOSE */
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} /* gen_closetray() */
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* scale_volume(vol, max)
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* Return a volume value suitable for passing to the CD-ROM drive. "vol"
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* is a volume slider setting; "max" is the slider's maximum value.
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* On Sun and DEC CD-ROM drives, the amount of sound coming out the jack
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* increases much faster toward the top end of the volume scale than it
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* does at the bottom. To make up for this, we make the volume scale look
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* sort of logarithmic (actually an upside-down inverse square curve) so
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* that the volume value passed to the drive changes less and less as you
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* approach the maximum slider setting. The actual formula looks like
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* (max^2 - (max - vol)^2) * (max_volume - min_volume)
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* v = --------------------------------------------------- + min_volume
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* If your system's volume settings aren't broken in this way, something
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* like the following should work:
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* return ((vol * (max_volume - min_volume)) / max + min_volume);
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scale_volume( int vol, int max )
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return ((max * max - (max - vol) * (max - vol)) *
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(max_volume - min_volume) / (max * max) + min_volume);
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} /* scale_volume() */
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* unscale_volume(cd_vol, max)
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* Given a value between min_volume and max_volume, return the volume slider
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* value needed to achieve that value.
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* Rather than perform floating-point calculations to reverse the above
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* formula, we simply do a binary search of scale_volume()'s return values.
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unscale_volume( int cd_vol, int max )
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int vol = 0, top = max, bot = 0, scaled;
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vol = (top + bot) / 2;
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scaled = scale_volume(vol, max);
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if (cd_vol == scaled)
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} /* unscale_volume() */
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* Set the volume level for the left and right channels. Their values
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* range from 0 to 100.
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gen_set_volume( struct wm_drive *d, int left, int right )
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struct cd_playback pb;
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struct cd_playback_status ps;
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struct cd_playback_control pc;
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left = scale_volume(left, 100);
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right = scale_volume(right, 100);
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bzero((char *)&pb, sizeof(pb));
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bzero((char *)&ps, sizeof(ps));
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bzero((char *)&pc, sizeof(pc));
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pb.pb_alloc_length = sizeof(ps);
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pb.pb_buffer = (caddr_t)&ps;
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if (ioctl(d->fd, CDROM_PLAYBACK_STATUS, &pb))
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pc.pc_chan0_select = ps.ps_chan0_select;
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pc.pc_chan0_volume = (left < CDROM_MIN_VOLUME) ?
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CDROM_MIN_VOLUME : (left > CDROM_MAX_VOLUME) ?
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CDROM_MAX_VOLUME : left;
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pc.pc_chan1_select = ps.ps_chan1_select;
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pc.pc_chan1_volume = (right < CDROM_MIN_VOLUME) ?
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CDROM_MIN_VOLUME : (right > CDROM_MAX_VOLUME) ?
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CDROM_MAX_VOLUME : right;
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pb.pb_alloc_length = sizeof(pc);
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pb.pb_buffer = (caddr_t)&pc;
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if (ioctl(d->fd, CDROM_PLAYBACK_CONTROL, &pb))
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} /* gen_set_volume() */
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* Read the initial volume from the drive, if available. Each channel
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* ranges from 0 to 100, with -1 indicating data not available.
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gen_get_volume(struct wm_drive *d, int *left, int *right)
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struct cd_playback pb;
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struct cd_playback_status ps;
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bzero((char *)&pb, sizeof(pb));
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bzero((char *)&ps, sizeof(ps));
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pb.pb_alloc_length = sizeof(ps);
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pb.pb_buffer = (caddr_t)&ps;
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if (ioctl(d->fd, CDROM_PLAYBACK_STATUS, &pb))
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*left = unscale_volume(ps.ps_chan0_volume, 100);
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*right = unscale_volume(ps.ps_chan1_volume, 100);
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} /* gen_get_volume() */
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/*------------------------------------------------------------------------*
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* gen_get_cdtext(drive, buffer, lenght)
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*------------------------------------------------------------------------*/
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gen_get_cdtext(struct wm_drive *d, unsigned char **pp_buffer, int *p_buffer_lenght)
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return -1; /* No SCSI, no CDTEXT */
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} /* gen_get_cdtext() */
added
removed
kscd/libwm/plat_ultrix.c
